REDHAT-BUG-720612
First published: Tue Jul 12 2011(Updated: )
It was found that libpng read uninitialized memory when it encountered a sCAL chunk that is empty, and improperly handles a sCAL chunk that lacks the terminating zero between the two strings that it conveys. This was fixed in libpng-1.5.4, libpng-1.4.8, libpng-1.2.45, and libpng-1.0.55. Patch: <a href="http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=commitdiff;h=61a2d8a2a7b03023e63eae9a3e64607aaaa6d339">http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=commitdiff;h=61a2d8a2a7b03023e63eae9a3e64607aaaa6d339</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libp2p | <1.5.4 | |
| Libp2p | <1.4.8 | |
| Libp2p | <1.2.45 | |
| Libp2p | <1.0.55 |
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Reference Links
- http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=commitdiff;h=61a2d8a2a7b03023e63eae9a3e64607aaaa6d339
- https://access.redhat.com/security/cve/CVE-2011-2692
- http://www.kb.cert.org/vuls/id/819894
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=721307
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=721309
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=721310
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=721312
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=721311
- https://rhn.redhat.com/errata/RHSA-2011-1104.html
- https://rhn.redhat.com/errata/RHSA-2011-1103.html
- https://rhn.redhat.com/errata/RHSA-2011-1105.html
- https://bugzilla.redhat.com/show_bug.cgi?id=720612
Frequently Asked Questions
What is the severity of REDHAT-BUG-720612?
The severity of REDHAT-BUG-720612 is categorized as a medium-risk vulnerability due to the potential for unintended information disclosure.
How do I fix REDHAT-BUG-720612?
To fix REDHAT-BUG-720612, you should upgrade to libpng versions 1.5.4, 1.4.8, 1.2.45, or 1.0.55, which contain the necessary patches.
What are the potential impacts of REDHAT-BUG-720612?
The potential impacts of REDHAT-BUG-720612 include the reading of uninitialized memory, which may lead to information leakage.
Which versions of libpng are affected by REDHAT-BUG-720612?
Affected versions of libpng include all versions prior to 1.5.4, 1.4.8, 1.2.45, and 1.0.55.
Is there a known exploit for REDHAT-BUG-720612?
As of now, there is no widely reported exploit for REDHAT-BUG-720612, but the vulnerability itself could be exploited in specific circumstances.
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- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2011-2692
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- vendor/libpng
- canonical/libp2p