RHEL 6 / 7 : mailx (RHSA-2014:1999)

High Nessus Plugin ID 80074


The remote Red Hat host is missing one or more security updates.


Updated mailx packages that fix two security issues are now available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The mailx packages contain a mail user agent that is used to manage mail using scripts.

A flaw was found in the way mailx handled the parsing of email addresses. A syntactically valid email address could allow a local attacker to cause mailx to execute arbitrary shell commands through shell meta-characters and the direct command execution functionality.
(CVE-2004-2771, CVE-2014-7844)

Note: Applications using mailx to send email to addresses obtained from untrusted sources will still remain vulnerable to other attacks if they accept email addresses which start with '-' (so that they can be confused with mailx options). To counteract this issue, this update also introduces the '--' option, which will treat the remaining command line arguments as email addresses.

All mailx users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.


Update the affected mailx and / or mailx-debuginfo packages.

See Also




Plugin Details

Severity: High

ID: 80074

File Name: redhat-RHSA-2014-1999.nasl

Version: $Revision: 1.6 $

Type: local

Agent: unix

Published: 2014/12/17

Modified: 2017/01/06

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.1

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

Temporal Vector: CVSS2#E:U/RL:ND/RC:UR

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:mailx, p-cpe:/a:redhat:enterprise_linux:mailx-debuginfo, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.6, cpe:/o:redhat:enterprise_linux:7

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2014/12/16

Reference Information

CVE: CVE-2004-2771, CVE-2014-7844

BID: 71701, 71704

OSVDB: 115954

RHSA: 2014:1999