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XFree86 Pixmap Creation Integer Overflow Vulnerability
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Secunia Advisory:
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SA16777
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Release Date:
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2005-09-13
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Last Update:
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2005-09-26
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Popularity:
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10,754 views
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Critical:
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Less critical
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Impact:
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Privilege escalation
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Where:
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Local system
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Solution Status:
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Unpatched
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| Software: | XFree86 4.1.x
XFree86 4.2.x
XFree86 4.3.x
XFree86 4.4.x
XFree86 4.5.x
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| CVE reference: | CVE-2005-2495
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Description:
Luke Hutchison has reported a vulnerability in XFree86, which potentially can be exploited by malicious, local users to gain escalated privileges.
The vulnerability is caused due to an integer overflow in the allocation of pixmaps. This can be exploited to cause a heap based buffer overflow by creating an overly large pixmap.
Successful exploitation may lead to execution of arbitrary code.
Solution:
Grant only trusted users access to affected systems.
Provided and/or discovered by:
Luke Hutchison
Changelog:
2005-09-26: Added link to US-CERT vulnerability note.
Original Advisory:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=166859
Other References:
US-CERT VU#102441:
http://www.kb.cert.org/vuls/id/102441
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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