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

IBM 2805-MC5 X3550 M3 1x Intel Xeon E5630 2.53GHz 8GB DRAM Server 2x PSU
$600.0
IBM 2805-MC5 X3550 M3 1x Intel Xeon E5630 2.53GHz 8GB DRAM Server 2x PSU pictureServer RAM 40GB 10x 4GB PC2-5300F FB DIMM Fully Buffered 667MHz FITS Dell HP IBM
$34.95
Server RAM 40GB 10x 4GB PC2-5300F FB DIMM Fully Buffered 667MHz FITS Dell HP IBM pictureIBM System X Series Server Lot of 23 X3550, X3550M2, X3650, X3850 M2 (No HDs)
$1349.99
IBM System X Series Server Lot of 23 X3550, X3550M2, X3650, X3850 M2 (No HDs) picture64GB (8X8GB DIMMs) PC3L-10600R ECC DDR3-1333MHz HP IBM DELL Server Memory
$153.44
64GB (8X8GB DIMMs) PC3L-10600R ECC DDR3-1333MHz HP IBM DELL Server Memory picture


Discussions

No Discussions have been posted on this vulnerability.