46187 : X.Org X Window System (X11) Record and Security Extensions Multiple Function Memory Corruption
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Views This Week Views All Time Added to OSVDB Last Modified Modified (since 2008) Percent Complete
5 1032 almost 6 years ago almost 2 years ago 11 times 75%

Timeline

Disclosure Date
2008-06-11

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2008-1377" target="_blank">CVE</a>)</em> : The (1) SProcRecordCreateContext and (2) SProcRecordRegisterClients functions in the Record extension and the (3) SProcSecurityGenerateAuthorization function in the Security extension in the X server 1.4 in X.Org X11R7.3 allow context-dependent attackers to execute arbitrary code via requests with crafted length values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption.

Classification

Attack Type: Input Manipulation
Impact: Loss of Integrity
Solution: Patch / RCS
Exploit: Exploit Private
Disclosure: Vendor Verified

Solution

Upgrade to version 1.4 or higher, as it has been reported to fix this vulnerability. It is also possible to temporarily work around the flaw by implementing the following workaround: Access to the vulnerable code in the SECURITY extension can be prevented by preventing the X server from loading the extension. However, doing so may seriously impair the functionality of the server. Adding the following lines to the X configuration file will disable the SECURITY extension:
Section "Extensions"
Option "SECURITY" "disable"
EndSection

Products

X.Org Foundation
Xorg Server
1.1
1.2
1.3
1.0

References

Tools & Filters

33151 33152 33154 33164 33165 33176 33179 33199

Credit

CVSSv2 Score

CVSSv2 Base Score = 9.0
Source: nvd.nist.gov | Generated: 2008-06-17 | Disagree?

Access_vector_2 Access_complexity_2 Authentication_1 Confidentiality_impact_2 Integrity_impact_2 Availability_impact_2

Comments

No Comments.

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