Secunia Logo
Netsikker nu! 2008
 
X.Org X11 Render Extension Buffer Overflow Vulnerability
Secunia Advisory: SA19900
Release Date: 2006-05-03
Popularity: 13,248 views

Critical:
Moderately critical
Impact: DoS
System access
Where: From local network
Solution Status: Vendor Patch

Software:X Window System 11 (X11) 6.x
X Window System 11 (X11) 7.x

Subscribe: Instant alerts on relevant vulnerabilities

CVE reference:CVE-2006-1526


Description:
A vulnerability has been reported in X11, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.

The vulnerability is caused due to a buffer size calculation error within the XRender extension triangle handling code. This can be exploited by a client that is authorised to connect to the X server to cause a buffer overflow.

Successful exploitation may allow arbitrary code execution.

The vulnerability has been reported in X11R6.8.x, X11R6.9.0, and X11R7.0 (xorg-server 1.0.x).

Solution:
Apply patch.

-- X.Org Server (X11R7.0) --

http://xorg.freedesktop.org/releases/.../patches/xorg-server-1.0.x-mitri.diff

MD5: 9a9356f86fe2c10985f1008d459fb272
SHA1: d6eba2bddac69f12f21785ea94397b206727ba93

-- X.Org Server (X11R6.9.0) --

http://xorg.freedesktop.org/releases/X11R6.9.0/patches/x11r6.9.0-mitri.diff

MD5: d666925bfe3d76156c399091578579ae
SHA1: 3d9da8bb9b28957c464d28ea194d5df50e2a3e5c

-- X.Org Server (X11R6.8.2) --

http://xorg.freedesktop.org/releases/.../patches/xorg-68x-CAN-2006-1526.patch

MD5: d5b46469a65972786b57ed2b010c3eb2
SHA1: f764a77a0da4e3af88561805c5c8e28d5c5b3058

Provided and/or discovered by:
Reported by the vendor.

Original Advisory:
http://lists.freedesktop.org/archives/xorg/2006-May/015136.html


Track this Secunia Advisory
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.

Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.

About this Secunia Advisory
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
  
Latest Advisories

Send Feedback to Secunia
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

Ideas, suggestions, and other feedback are most welcome.

Most Popular - 3 Hours

1. WinFTP "PASV" Denial of Service Vulnerability // 44 views
2. My PHP Indexer "d" File Disclosure Vulnerability // 40 views
3. Joomla Ignite Gallery Component "gallery" SQL Injection // 40 views
4. Real Estates Classifieds "cat" SQL Injection Vulnerability // 38 views
5. ScriptsEz Mini Hosting Panel "dir" File Disclosure // 35 views
6. Joomla OwnBiblio Component "catid" SQL Injection // 33 views
7. NewLife Blogger "nlb3" SQL Injection Vulnerability // 33 views
8. Ayco Okul "linkid" SQL Injection Vulnerability // 32 views
9. Joomla Mad4Joomla Mailforms Component "jid" SQL Injection // 28 views
10. MunzurSoft Wep Portal W3 "kat" SQL Injection Vulnerability // 26 views