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[ GLSA 201101-03 ] libvpx: User-assisted execution of arbitrary code
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PostPosted: Sat Jan 15, 2011 3:26 am    Post subject: [ GLSA 201101-03 ] libvpx: User-assisted execution of arbitr Reply with quote

Gentoo Linux Security Advisory

Title: libvpx: User-assisted execution of arbitrary code (GLSA 201101-03)
Severity: normal
Exploitable: remote
Date: January 15, 2011
Bug(s): #345559
ID: 201101-03

Synopsis


Timothy B. Terriberry discovered that libvpx contains an integer overflow
vulnerability in the processing of video streams that may allow
user-assisted execution of arbitrary code.


Background


libvpx is the VP8 codec SDK used to encode and decode video streams,
typically within a WebM format media file.


Affected Packages

Package: media-libs/libvpx
Vulnerable: < 0.9.5
Unaffected: >= 0.9.5
Architectures: All supported architectures


Description


libvpx is vulnerable to an integer overflow vulnerability when
processing crafted VP8 video streams.


Impact


A remote attacker could entice a user to open a specially crafted media
file, possibly resulting in the execution of arbitrary code with the
privileges of the user running the application, or a Denial of Service.


Workaround


There is no known workaround at this time.


Resolution


All libvpx users should upgrade to the latest stable version:
Code:
# emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libvpx-0.9.5"

Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying some of these
packages.


References

CVE-2010-4203
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