FreeBSD : Exim -- remote code execution and information disclosure (36594c54-7be7-11e0-9838-0022156e8794)

High Nessus Plugin ID 53907


The remote FreeBSD host is missing a security-related update.


Release notes for Exim 4.76 says :

Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a format-string attack -- SECURITY: remote arbitrary code execution.

DKIM signature header parsing was double-expanded, second time unintentionally subject to list matching rules, letting the header cause arbitrary Exim lookups (of items which can occur in lists, *not* arbitrary string expansion). This allowed for information disclosure.

Also, impact assessment was redone shortly after the original announcement :

Further analysis revealed that the second security was more severe than I realised at the time that I wrote the announcement. The second security issue has been assigned CVE-2011-1407 and is also a remote code execution flaw. For clarity: both issues were introduced with 4.70.


Update the affected package.

See Also

Plugin Details

Severity: High

ID: 53907

File Name: freebsd_pkg_36594c547be711e098380022156e8794.nasl

Version: $Revision: 1.6 $

Type: local

Published: 2011/05/16

Modified: 2013/06/21

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:exim, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 2011/05/14

Vulnerability Publication Date: 2011/05/10

Reference Information

CVE: CVE-2011-1407, CVE-2011-1764