Vulnerability Assessment & Network Security Forums



If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200501-23] Exim: Two buffer overflows


Vulnerability Assessment Details

[GLSA-200501-23] Exim: Two buffer overflows

Vulnerability Assessment Summary
Exim: Two buffer overflows

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200501-23
(Exim: Two buffer overflows)


Buffer overflows have been found in the host_aton() function
(CVE-2005-0021) as well as in the spa_base64_to_bits() function
(CVE-2005-0022), which is part of the SPA authentication code.

Impact

A local attacker could trigger the buffer overflow in host_aton()
by supplying an illegal IPv6 address with more than 8 components, using
a command line option. The second vulnerability could be remotely
exploited during SPA authentication, if it is enabled on the server.
Both buffer overflows can potentially lead to the execution of
arbitrary code.

Workaround

There is no known workaround at this time.

References:
http://www.exim.org/mail-archives/exim-announce/2005/msg00000.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0021
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0022


Solution:
All Exim users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/exim-4.43-r2"


Network Security Threat Level: High


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

Cables, Connectors

Apple Keyboard with Numeric Keypad M0110A for Macintosh Mac 128k, 512k, Plus
$89.99
Apple Keyboard with Numeric Keypad M0110A for Macintosh Mac 128k, 512k, Plus picture1984 A Guided Tour of Macintosh and MacWrite MacPaint Cassette 128K M0001 Mac
$29.84
1984 A Guided Tour of Macintosh and MacWrite MacPaint Cassette 128K M0001 Mac picture1984 Introducing Macintosh 128K BROCHURE Poster from SEALED Pack Mac M0001 RARE
$49.84
1984 Introducing Macintosh 128K BROCHURE Poster from SEALED Pack Mac M0001 RARE picture1984 Macintosh 128K M0001 Mac 512K Original Beige Programmer's Reset Switch NICE
$29.84
1984 Macintosh 128K M0001 Mac 512K Original Beige Programmer's Reset Switch NICE picture


Discussions

No Discussions have been posted on this vulnerability.