CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
EPSS
Percentile
99.7%
A vulnerability in the way Mozilla Network Security Services (NSS) handles malformed SSLv2 server messages may lead to execution of arbitrary code.
The SSLv2 protocol uses a client master key to generate all subsequent session keys. The client master key is created using a public key recieved from the server during phase one of the SSL handshake. Mozilla NSS library contains a vulnerability in the way malformed SSLv2 server messages related to the public key are handled that may result in a buffer overflow. According to the Mozilla Foundation Security Advisory 2007-06:
SSL clients such as Firefox and Thunderbird can suffer a buffer overflow if a malicious server presents a certificate with a public key that is too small to encrypt the entire “Master Secret”. Exploiting this overflow appears to be unreliable but possible if the SSLv2 protocol is enabled.
Note that this vulnerability may affect any application that uses the Mozilla NSS library.
A remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the user who is running the vulnerable application or cause a denial of service.
Apply an update
According to the Mozilla Foundation Security Advisory 2007-06, this vulnerability is addressed in Firefox 2.0.0.2, Firefox 1.5.0.10, SeaMonkey 1.0.8, and NSS 3.11.5.
Disable SSLv2
Disabling support for the SSLv2 protocol appears to prevent exploitation of this vulnerability. Instructions for disabling the SSLv2 protocol support in Firefox and Thunderbird can be found in the Mozilla Foundation Security Advisory 2007-06.
377812
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Updated: April 05, 2007
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Refer to glsa-200703-18.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23377812 Feedback>).
Updated: February 27, 2007
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Refer to Mozilla Foundation Security Advisory 2007-06.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23377812 Feedback>).
Updated: April 05, 2007
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Refer to SSA:2007-066-04.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23377812 Feedback>).
Updated: April 05, 2007
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
Refer to Sun Alert Notification 102856.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23377812 Feedback>).
Group | Score | Vector |
---|---|---|
Base | ||
Temporal | ||
Environmental |
This vulnerability was reported in Mozilla Foundation Security Advisory 2007-06. Mozilla credits iDefense with reporting this issue.
This document was written by Chris Taschner.
CVE IDs: | CVE-2007-0008 |
---|---|
Severity Metric: | 12.72 Date Public: |
labs.idefense.com/intelligence/vulnerabilities/display.php?id=482
secunia.com/advisories/24205/
secunia.com/advisories/24238/
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secunia.com/advisories/24384/
secunia.com/advisories/24389/
secunia.com/advisories/24406/
secunia.com/advisories/24410/
secunia.com/advisories/24455/
secunia.com/advisories/24456/
secunia.com/advisories/24457/
secunia.com/advisories/24703/
www.ciac.org/ciac/bulletins/r-164.shtml
www.mozilla.com/en-US/firefox/2.0.0.2/releasenotes/
www.mozilla.com/en-US/firefox/releases/1.5.0.10.html
www.mozilla.org/projects/seamonkey/releases/
www.mozilla.org/projects/security/pki/nss/
www.mozilla.org/projects/security/pki/nss/ssl/draft02.html
www.mozilla.org/security/announce/2007/mfsa2007-06.html
www.securityfocus.com/bid/22694