Secunia Research: imlib2 PNM and XPM Buffer Overflow
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Secunia Research 29/05/2008
- imlib2 PNM and XPM Buffer Overflows -
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Table of Contents
Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10
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1) Affected Software
* imlib2 1.4.0
NOTE: Other versions may also be affected.
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2) Severity
Rating: Highly critical
Impact: System access
Where: Remote
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3) Vendor's Description of Software
"Imlib 2 is the successor to Imlib. It is NOT a newer version -- it
is a completely new library. Imlib 2 can be installed alongside
Imlib 1.x without any problems since they are effectively different
libraries which have very similar functionality."
Product Link:
http://enlightenment.org
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4) Description of Vulnerability
Secunia Research has discovered two vulnerabilities in imlib2, which
can be exploited by malicious people to cause a DoS (Denial of
Service) or compromise an application using the library.
1) A boundary error exists within the "load()" function in
src/modules/loaders/loader_pnm.c when processing the header of a
PNM image file. This can be exploited to cause a stack-based buffer
overflow by e.g. tricking a user into opening a specially crafted
PNM image in an application using the imlib2 library.
Successful exploitation allows execution of arbitrary code.
2) A boundary error exists within the "load()" function in
src/modules/loader_xpm.c when processing an XPM image file. This can
be exploited to cause a stack-based buffer overflow by e.g. tricking
a user into opening a specially crafted XPM image with an application
using the imlib2 library.
Successful exploitation may allow execution of arbitrary code.
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5) Solution
Fixed in the CVS repository.
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6) Time Table
27/05/2008 - Vendor notified.
27/05/2008 - Vendor response.
29/05/2008 - Public disclosure.
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7) Credits
Discovered by Stefan Cornelius, Secunia Research.
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8) References
The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2008-2426 for these vulnerabilities.
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9) About Secunia
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10) Verification
Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2008-25/
Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/
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