CVE-2012-4415: Buffer Overflow
First published: Wed Sep 12 2012(Updated: )
A stack based buffer overflow flaw was found in guac client plug-in protocol handling functionality of libguac, a common library used by all C components of Guacamole. A remote attacker could provide a specially-crafted protocol specification to the guac client plug-in that, when processed would lead to guac client crash (denial of service). References: [1] <a href="http://www.openwall.com/lists/oss-security/2012/09/11/3">http://www.openwall.com/lists/oss-security/2012/09/11/3</a> [2] <a href="http://www.openwall.com/lists/oss-security/2012/09/11/7">http://www.openwall.com/lists/oss-security/2012/09/11/7</a> Upstream patch: [3] <a href="http://guac-dev.org/trac/changeset/7dcefa744b4a38825619c00ae8b47e5bae6e38c0/libguac">http://guac-dev.org/trac/changeset/7dcefa744b4a38825619c00ae8b47e5bae6e38c0/libguac</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Fedora | =16 | |
| Fedora | =17 | |
| Apache Guacamole | <=0.6.2 | |
| Apache Guacamole | =0.5.0 | |
| Apache Guacamole | =0.6.0 | |
| Apache Guacamole | =0.6.3 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2012/09/11/3
- http://www.openwall.com/lists/oss-security/2012/09/11/7
- http://guac-dev.org/trac/changeset/7dcefa744b4a38825619c00ae8b47e5bae6e38c0/libguac
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=856746
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=856747
- https://bugzilla.redhat.com/show_bug.cgi?id=856743
- http://archives.neohapsis.com/archives/bugtraq/2012-09/0107.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088031.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088218.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088272.html
- http://www.securityfocus.com/bid/55497
Frequently Asked Questions
What is the severity of CVE-2012-4415?
CVE-2012-4415 has a moderate severity rating due to the potential for a remote attacker to exploit a stack-based buffer overflow.
How do I fix CVE-2012-4415?
To fix CVE-2012-4415, upgrade to a non-vulnerable version of Guacamole, specifically version 0.6.3 or later.
What systems are affected by CVE-2012-4415?
CVE-2012-4415 affects Fedora versions 16 and 17, along with Guacamole versions up to and including 0.6.2.
Can CVE-2012-4415 be exploited remotely?
Yes, CVE-2012-4415 can be exploited remotely if a user processes specially-crafted protocol specifications.
What is the nature of the vulnerability in CVE-2012-4415?
CVE-2012-4415 is a stack-based buffer overflow vulnerability found in the protocol handling functionality of the libguac library.
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