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Test ID:1.3.6.1.4.1.25623.1.0.870769
Category:Red Hat Local Security Checks
Title:RedHat Update for rsyslog RHSA-2012:0796-04
Summary:The remote host is missing an update for the 'rsyslog'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'rsyslog'
package(s) announced via the referenced advisory.

Vulnerability Insight:
The rsyslog packages provide an enhanced, multi-threaded syslog daemon.

A numeric truncation error, leading to a heap-based buffer overflow, was
found in the way the rsyslog imfile module processed text files containing
long lines. An attacker could use this flaw to crash the rsyslogd daemon
or, possibly, execute arbitrary code with the privileges of rsyslogd, if
they are able to cause a long line to be written to a log file that
rsyslogd monitors with imfile. The imfile module is not enabled by default.
(CVE-2011-4623)

Bug fixes:

* Several variables were incorrectly deinitialized with Transport Layer
Security (TLS) transport and keys in PKCS#8 format. The rsyslogd daemon
aborted with a segmentation fault when keys in this format were provided.
Now, the variables are correctly deinitialized. (BZ#727380)

* Previously, the imgssapi plug-in initialization was incomplete. As a
result, the rsyslogd daemon aborted when configured to provide a GSSAPI
listener. Now, the plug-in is correctly initialized. (BZ#756664)

* The fully qualified domain name (FQDN) for the localhost used in messages
was the first alias found. This did not always produce the expected result
on multihomed hosts. With this update, the algorithm uses the alias that
corresponds to the hostname. (BZ#767527)

* The gtls module leaked a file descriptor every time it was loaded due to
an error in the GnuTLS library. No new files or network connections could
be opened when the limit for the file descriptor count was reached. This
update modifies the gtls module so that it is not unloaded during the
process lifetime. (BZ#803550)

* rsyslog could not override the hostname to set an alternative hostname
for locally generated messages. Now, the local hostname can be overridden.
(BZ#805424)

* The rsyslogd init script did not pass the lock file path to the 'status'
action. As a result, the lock file was ignored and a wrong exit code was
returned. This update modifies the init script to pass the lock file to
the 'status' action. Now, the correct exit code is returned. (BZ#807608)

* Data could be incorrectly deinitialized when rsyslogd was supplied with
malformed spool files. The rsyslogd daemon could be aborted with a
segmentation fault. This update modifies the underlying code to correctly
deinitialize the data. (BZ#813079)

* Previously, deinitialization of non-existent data could, in certain error
cases, occur. As a result, r ...

Description truncated, please see the referenced URL(s) for more information.

Affected Software/OS:
rsyslog on Red Hat Enterprise Linux Desktop (v. 6),
Red Hat Enterprise Linux Server (v. 6),
Red Hat Enterprise Linux Workstation (v. 6)

Solution:
Please Install the Updated Packages.

CVSS Score:
2.1

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2011-4623
BugTraq ID: 51171
http://www.securityfocus.com/bid/51171
https://bugzilla.redhat.com/show_bug.cgi?id=769822
http://www.openwall.com/lists/oss-security/2011/12/22/2
http://www.securitytracker.com/id?1026556
http://secunia.com/advisories/45848
http://secunia.com/advisories/47698
http://www.ubuntu.com/usn/USN-1338-1
CopyrightCopyright (c) 2012 Greenbone Networks GmbH

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