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Debian DLA-114-1 : heirloom-mailx security update
high Nessus Plugin ID 82098
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Synopsis
The remote Debian host is missing a security update.Description
Two security vulnerabilities were discovered in Heirloom mailx, an implementation of the 'mail' command :CVE-2004-2771
mailx interprets interprets shell meta-characters in certain email addresses.
CVE-2014-7844
An unexpected feature of mailx treats syntactically valid email addresses as shell commands to execute.
Shell command execution can be re-enabled using the 'expandaddr' option.
Note that this security update does not remove all mailx facilities for command execution, though. Scripts which send mail to addresses obtained from an untrusted source (such as a web form) should use the '--' separator before the email addresses (which was fixed to work properly in this update), or they should be changed to invoke 'mail
-t' or 'sendmail -i -t' instead, passing the recipient addresses as part of the mail header.
For the oldstable distribution (squeeze), these problems have been fixed in version 12.4-2+deb6u1.
We recommend that you upgrade your heirloom-mailx packages.
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Upgrade the affected heirloom-mailx package.See Also
https://lists.debian.org/debian-lts-announce/2014/12/msg00017.html
https://packages.debian.org/source/squeeze-lts/heirloom-mailx
Plugin Details
Severity: High
ID: 82098
File Name: debian_DLA-114.nasl
Version: 1.8
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 3/26/2015
Updated: 1/11/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:debian:debian_linux:6.0, p-cpe:/a:debian:debian_linux:heirloom-mailx
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 12/17/2014
Vulnerability Publication Date: 12/24/2014
Reference Information
CVE: CVE-2004-2771, CVE-2014-7844