MIT Kerberos contains array overrun in RPC library used by kadmind

Overview

Vulnerabilities in the MIT Kerberos libgssrpc library may allow an attacker to cause a denial of service or potentially execute arbitrary code.

Description

The MIT krb5 Kerberos implementation includes a GSS RPC library used in the Kerberos administration server (kadmind). Two flaws exist in the libgssprc library that can cause an array overrun if too many file descriptors are opened. These flaws result in a vulnerability that could allow memory corruption in the kadmind server.

MIT notes that in software versions 1.4 and later, this flaw can only be exploited in configurations that allow large numbers of open file descriptors in a process. In software versions before 1.3, a similar flaw can be exploited in similar circumstances but is further limited to platforms that do not define certain macros in certain C system header files.

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Impact

An unauthenticated remote attacker can cause memory corruption in the libgssrpc library used by kadmind. ``kadmind will crash, thereby resulting in a denial of service. MIT notes that it is at least theoretically possible for such corruption to result in database corruption or arbitrary code execution.

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Solution

Upgrade or apply a patch from the vendor
Patches have been released to address these issues. Please see the Systems Affected section of this document for more details.

---

Workaround

Before starting kadmind, use “ulimit -n” for Bourne shell and derivatives or “limit descriptors” for C shell and derivatives. Or use similar resource-limiting mechanisms in the invoking process to limit the maximum open file descriptors. The chosen limit should be less than or equal to the value of the FD_SETSIZE macro typically defined in the <sys/select.h> header file.

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Vendor Information

374121

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MIT Kerberos Development Team __ Affected

Notified: March 06, 2008 Updated: March 18, 2008

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

The MIT Kerberos Development Team has published MIT krb5 Security Advisory MITKRB5-SA-2008-002 in response to this issue. Users are encouraged to review this advisory and apply the appropriate patch or workaround.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23374121 Feedback>).

Ubuntu __ Affected

Notified: March 06, 2008 Updated: March 19, 2008

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

Ubuntu has published Ubuntu Security Notice USN-587 in response to this issue. Users are encouraged to review this notice and apply the updates it refers to.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23374121 Feedback>).

Cisco Systems, Inc. __ Not Affected

Notified: March 06, 2008 Updated: March 10, 2008

Statement Date: March 10, 2008

Status

Not Affected

Vendor Statement

PSIRT confirms our products that run MIT Kerberos are not affected by these vulnerabilities.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Computer Associates __ Not Affected

Notified: March 06, 2008 Updated: March 18, 2008

Statement Date: March 15, 2008

Status

Not Affected

Vendor Statement

FYI - no CA products ship or statically link with Kerberos libraries, so we do not consider any CA products to be vulnerable.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Force10 Networks, Inc. Not Affected

Notified: March 06, 2008 Updated: July 22, 2011

Status

Not Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Intel Corporation __ Not Affected

Notified: March 06, 2008 Updated: March 06, 2008

Statement Date: March 06, 2008

Status

Not Affected

Vendor Statement

No issue with disclosure timelines. Checked internally and Intel is not using MIT Kerberos in our product mix.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Intoto __ Not Affected

Notified: March 06, 2008 Updated: March 06, 2008

Statement Date: March 06, 2008

Status

Not Affected

Vendor Statement

Status: Not Vulnerable

Vendor Statement:

Intoto products are not affected due to the potential exploits documented
in this vulnerability note, because they do not use MIT Kerberos
implementation.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Juniper Networks, Inc. __ Not Affected

Notified: March 06, 2008 Updated: April 03, 2008

Statement Date: March 19, 2008

Status

Not Affected

Vendor Statement

Juniper Networks products are not susceptible to this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Microsoft Corporation __ Not Affected

Notified: March 06, 2008 Updated: April 03, 2008

Statement Date: March 20, 2008

Status

Not Affected

Vendor Statement

Please update your advisory to indicate that Microsoft is not vulnerable.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Secure Computing Network Security Division __ Not Affected

Notified: March 06, 2008 Updated: March 06, 2008

Statement Date: March 06, 2008

Status

Not Affected

Vendor Statement

No Secure Computing products make use of MIT Kerberos.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Sun Microsystems, Inc. __ Not Affected

Notified: March 06, 2008 Updated: March 18, 2008

Statement Date: March 11, 2008

Status

Not Affected

Vendor Statement

Sun's Kerberos implementation is not impacted by these issues so you can mark us down as 'Not Impacted'. CERT VU#895609 corresponds to krb4 which we don't support and we managed to address CERT VU#374121 in a different bug fix years ago.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

TippingPoint, Technologies, Inc. __ Not Affected

Notified: March 06, 2008 Updated: March 18, 2008

Statement Date: March 11, 2008

Status

Not Affected

Vendor Statement

TippingPoint does not use the Kerberos implementation its products.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

3com, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

AT&T Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Alcatel Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Apple Computer, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Avaya, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Avici Systems, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Borderware Technologies Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Check Point Software Technologies Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Clavister Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Computer Associates eTrust Security Management Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Conectiva Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Cray Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

D-Link Systems, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Data Connection, Ltd. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Debian GNU/Linux Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

EMC Corporation Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Engarde Secure Linux Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Enterasys Networks Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Ericsson Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Extreme Networks Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

F5 Networks, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fedora Project Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fortinet, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Foundry Networks, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

FreeBSD, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Fujitsu Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Global Technology Associates Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hewlett-Packard Company Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hitachi Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Hyperchip Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM Corporation Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM Corporation (zseries) Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IBM eServer Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

IP Infusion, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Ingrian Networks, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Internet Security Systems, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Linksys (A division of Cisco Systems) Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Lucent Technologies Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Luminous Networks Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Mandriva, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

McAfee Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

MontaVista Software, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Multinet (owned Process Software Corporation) Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Multitech, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NEC Corporation Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NetBSD Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Network Appliance, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

NextHop Technologies, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Nortel Networks, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Novell, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Openwall GNU/*/Linux Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

QNX, Software Systems, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Quagga Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Red Hat, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Redback Networks, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Riverstone Networks, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

SUSE Linux Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Silicon Graphics, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Slackware Linux Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Sony Corporation Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Stonesoft Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Symantec, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

The SCO Group Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Trustix Secure Linux Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Turbolinux Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Unisys Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Watchguard Technologies, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Wind River Systems, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

ZyXEL Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

eSoft, Inc. Unknown

Notified: March 06, 2008 Updated: March 06, 2008

Status

Unknown

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

View all 82 vendors __View less vendors __

CVSS Metrics

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References

<http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2008-002.txt&gt;

Acknowledgements

Thanks to Ken Raeburn of the MIT Kerberos Team for reporting this vulnerability. MIT credits Jeff Altman of Secure Endpoints with discovering and reporting this issue in software version 1.6.3 and the Red Hat Security Response Team for reporting relevant information about older versions of the software.

This document was written by Chad R Dougherty.

Other Information

CVE IDs:	CVE-2008-0947, CVE-2008-0948
Severity Metric:	2.87 Date Public: