CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS
Percentile
88.0%
A vulnerability exists in the isakmpd
that could allow a remote attacker to cause a denial of service.
The OpenBSD isakmpd
establishes security associations for encrypted and authenticated (IPsec) network traffic. It implements the Internet Security Association and Key Management Protocol (ISAKMP) and Internet Key Exchange (IKE) protocol. An integer underflow error exists in isakmpd
’s handling of certain “Certificate Request Payloads”. An ISAKMP packet with a malformed Certificate Request Payload can trigger this error, resulting in failed allocation of a large amount of memory and subsequent crash of the isakmpd
service.
A remote attacker could cause the isakmpd
service to crash. Subsequent IPsec-enabled communications may be disrupted as a result.
Apply a patch from the vendor
Patches have been released to address this issue. Please see the Systems Affected section of this document for more details.
223273
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Updated: August 20, 2004
Affected
`Several bugs have been found in the ISAKMP daemon which can lead to memory
leaks and a remote denial of service condition. An attacker can craft
malformed payloads that can cause the isakmpd(8) process to stop
processing requests.
The problem is fixed in -current, 3.4-stable and 3.3-stable.
Patches are available at:
<ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.4/common/015_isakmpd2.patch>
<ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.3/common/020_isakmpd2.patch>
`
The vendor has not provided us with any further information regarding this vulnerability.
The CERT/CC has no additional comments at this time.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23223273 Feedback>).
Group | Score | Vector |
---|---|---|
Base | ||
Temporal | ||
Environmental |
This vulnerability was discovered by Rapid7 using their Striker test suite.
This document was written by Chad R Dougherty based on information published in Rapid7 Advisory R7-0018.
CVE IDs: | CVE-2004-0220 |
---|---|
Severity Metric: | 1.69 Date Public: |