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	867	almost 5 years ago	11 months 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

regenrecht - iDefense Labs VCP

CVSSv2 Score

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

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