GLSA-200610-06 : Mozilla Network Security Service (NSS): RSA signature forgery

This script is Copyright (C) 2006-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200610-06
(Mozilla Network Security Service (NSS): RSA signature forgery)

Daniel Bleichenbacher discovered that it might be possible to forge
signatures signed by RSA keys with the exponent of 3. This affects a
number of RSA signature implementations, including Mozilla's NSS.

Impact :

Since several Certificate Authorities (CAs) are using an exponent of 3
it might be possible for an attacker to create a key with a false CA
signature. This impacts any software using the NSS library, like the
Mozilla products Firefox, Thunderbird and Seamonkey.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200610-06.xml

Solution :

All NSS users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=dev-libs/nss-3.11.3'
Note: As usual after updating a library, you should run
'revdep-rebuild' (from the app-portage/gentoolkit package) to ensure
that all applications linked to it are properly rebuilt.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N)
CVSS Temporal Score : 3.2
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Gentoo Local Security Checks

Nessus Plugin ID: 22892 (gentoo_GLSA-200610-06.nasl)

Bugtraq ID: 19849

CVE ID: CVE-2006-4339
CVE-2006-4340