CVE-2012-0823: Input Validation
First published: Thu Feb 23 2012(Updated: )
VP8 Codec SDK (libvpx) before 1.0.0 "Duclair" allows remote attackers to cause a denial of service (application crash) via (1) unspecified "corrupt input" or (2) by "starting decoding from a P-frame," which triggers an out-of-bounds read, related to "the clamping of motion vectors in SPLITMV blocks".
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WebM Project libvpx | <=0.9.7 | |
| WebM Project libvpx | =0.9.0 | |
| WebM Project libvpx | =0.9.1 | |
| WebM Project libvpx | =0.9.2 | |
| WebM Project libvpx | =0.9.5 | |
| WebM Project libvpx | =0.9.6 | |
| WebM Project libvpx | =0.9.7 |
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Reference Links
- http://blog.webmproject.org/2012/01/vp8-codec-sdk-duclair-released.html
- http://code.google.com/p/webm/source/browse/CHANGELOG?repo=libvpx
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:023
- http://www.openwall.com/lists/oss-security/2012/01/28/4
- http://www.openwall.com/lists/oss-security/2012/01/30/2
- http://www.securityfocus.com/bid/51775
Frequently Asked Questions
What is the severity of CVE-2012-0823?
CVE-2012-0823 is classified as a denial of service vulnerability that can lead to application crashes.
How do I fix CVE-2012-0823?
To mitigate CVE-2012-0823, upgrade the VP8 Codec SDK (libvpx) to version 1.0.0 or later.
Which versions of libvpx are affected by CVE-2012-0823?
CVE-2012-0823 affects libvpx versions prior to 1.0.0, specifically from 0.9.0 to 0.9.7.
What types of attacks can CVE-2012-0823 enable?
CVE-2012-0823 can allow attackers to cause denial of service through corrupt input or by starting decoding from a P-frame.
Is CVE-2012-0823 a local or remote vulnerability?
CVE-2012-0823 is a remote vulnerability that can be exploited by attackers over a network.
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- vendor/webmproject
- canonical/webm project libvpx
- version/webm project libvpx/0.9.7
- version/webm project libvpx/0.9.0
- version/webm project libvpx/0.9.1
- version/webm project libvpx/0.9.2
- version/webm project libvpx/0.9.5
- version/webm project libvpx/0.9.6