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.
Vulnerability Assessment Details
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.
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
There is no known workaround at this time.
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
|Dell PowerEdge R710 Server Xeon E5530 2.40GHz (x2) 72GB RAM No HDDs SAS 6/i
|Mixed Lot of (7) 3.5" SAS Server HDDs 146GB to 6TB Seagate, Hitachi TESTED
|Dell PowerEdge R720 2x E5-2690 v2 3.0Ghz 10 Core 32GB 8x 300GB 15K SAS H710
|DELL POWEREDGE R630 8 BAY E5-2698V4 2.2GHZ 256GB 8 X 600GB SSD H730
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