CVE-2015-2806: Buffer Overflow
First published: Mon Mar 30 2015(Updated: )
From <a href="http://lists.gnu.org/archive/html/help-libtasn1/2015-03/msg00002.html">http://lists.gnu.org/archive/html/help-libtasn1/2015-03/msg00002.html</a>: GNU Libtasn1 is a standalone library written in C for manipulating ASN.1 objects including DER/BER encoding/decoding. GNU Libtasn1 is used by GnuTLS to handle X.509 structures and by GNU Shishi to handle Kerberos V5 structures. * Noteworthy changes in release 4.4 (released 2015-03-29) [stable] - Corrected a two-byte stack overflow in asn1_der_decoding. Reported by Hanno Böck. Exact commit that fixes this: <a href="http://git.savannah.gnu.org/gitweb/?p=libtasn1.git;a=commit;h=4d4f992826a4962790ecd0cce6fbba4a415ce149">http://git.savannah.gnu.org/gitweb/?p=libtasn1.git;a=commit;h=4d4f992826a4962790ecd0cce6fbba4a415ce149</a> CVE request: <a href="http://seclists.org/oss-sec/2015/q1/1038">http://seclists.org/oss-sec/2015/q1/1038</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/libtasn1 | <4.4 | 4.4 |
| Ubuntu | =10.04 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =14.10 | |
| Debian | =7.0 | |
| Fedora | =20 | |
| Fedora | =21 | |
| Fedora | =22 | |
| Libtasn1 | <=4.3 |
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Reference Links
- http://git.savannah.gnu.org/gitweb/?p=libtasn1.git;a=commit;h=4d4f992826a4962790ecd0cce6fbba4a415ce149
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154741.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154805.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155117.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155270.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155435.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155483.html
- http://www.debian.org/security/2015/dsa-3220
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:193
- http://www.openwall.com/lists/oss-security/2015/03/29/4
- http://www.openwall.com/lists/oss-security/2015/03/31/2
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.securityfocus.com/bid/73436
- http://www.securitytracker.com/id/1032080
- http://www.ubuntu.com/usn/USN-2559-1
- https://access.redhat.com/errata/RHSA-2017:1860
- https://security.gentoo.org/glsa/201509-04
- http://lists.gnu.org/archive/html/help-libtasn1/2015-03/msg00002.html
- http://seclists.org/oss-sec/2015/q1/1038
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1207193
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1207194
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1207195
- https://bugzilla.redhat.com/show_bug.cgi?id=1207192
- http://git.savannah.gnu.org/gitweb/?p=libtasn1.git%3Ba=commit%3Bh=4d4f992826a4962790ecd0cce6fbba4a415ce149
Frequently Asked Questions
What is the severity of CVE-2015-2806?
CVE-2015-2806 has a moderate severity rating due to potential vulnerabilities in the GNU Libtasn1 library.
How do I fix CVE-2015-2806?
To resolve CVE-2015-2806, upgrade GNU Libtasn1 to version 4.4 or later.
Which software is affected by CVE-2015-2806?
CVE-2015-2806 affects various versions of GNU Libtasn1, specifically up to version 4.3, along with several Linux distributions.
Is there an official patch for CVE-2015-2806?
Yes, official patches can be found in the latest updates for the GNU Libtasn1 library in affected distributions.
What is the impact of CVE-2015-2806?
The impact of CVE-2015-2806 could lead to potential denial of service attacks due to improper handling of input.
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