RHEL 2.1 / 3 : tcltk (RHSA-2008:0134)

This script is Copyright (C) 2008-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

Updated tcltk packages that fix a security issue are now available for
Red Hat Enterprise Linux 2.1, and 3.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

Tcl is a scripting language designed for embedding into other
applications and for use with Tk, a widget set.

An input validation flaw was discovered in Tk's GIF image handling. A
code-size value read from a GIF image was not properly validated
before being used, leading to a buffer overflow. A specially crafted
GIF file could use this to cause a crash or, potentially, execute code
with the privileges of the application using the Tk graphical toolkit.
(CVE-2008-0553)

A buffer overflow flaw was discovered in Tk's animated GIF image
handling. An animated GIF containing an initial image smaller than
subsequent images could cause a crash or, potentially, execute code
with the privileges of the application using the Tk library.
(CVE-2007-5378)

A flaw in the Tcl regular expression handling engine was discovered by
Will Drewry. This flaw, first discovered in the Tcl regular expression
engine used in the PostgreSQL database server, resulted in an infinite
loop when processing certain regular expressions. (CVE-2007-4772)

All users are advised to upgrade to these updated packages which
contain backported patches which resolve these issues.

See also :

https://www.redhat.com/security/data/cve/CVE-2007-4772.html
https://www.redhat.com/security/data/cve/CVE-2007-5378.html
https://www.redhat.com/security/data/cve/CVE-2008-0553.html
http://rhn.redhat.com/errata/RHSA-2008-0134.html

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.6
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 31160 ()

Bugtraq ID: 27163

CVE ID: CVE-2007-4772
CVE-2007-5378
CVE-2008-0553