CVE-2015-3622: Buffer Overflow
First published: Mon May 04 2015(Updated: )
A heap-based buffer overflow flaw was found in the way the libtasn1 library decoded certain DER-encoded input. A specially crafted, DER-encoded input could cause an application using libtasn1 to perform an invalid read, causing the application to crash. Upstream patch: <a href="http://git.savannah.gnu.org/gitweb/?p=libtasn1.git;a=commitdiff;h=f979435823a02f842c41d49cd41cc81f25b5d677">http://git.savannah.gnu.org/gitweb/?p=libtasn1.git;a=commitdiff;h=f979435823a02f842c41d49cd41cc81f25b5d677</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/libtasn1 | <4.5 | 4.5 |
| openSUSE | =13.2 | |
| Fedoraproject Fedora | =21 | |
| GNU Libtasn1 | <=4.4 |
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Reference Links
- http://git.savannah.gnu.org/gitweb/?p=libtasn1.git;a=commitdiff;h=f979435823a02f842c41d49cd41cc81f25b5d677
- https://crashes.fuzzing-project.org/TFPA-2015-005-libtasn1-4.4-heap-overflow.crt
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1218142
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1218143
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1218144
- https://access.redhat.com/errata/RHSA-2017:1860
- https://bugzilla.redhat.com/show_bug.cgi?id=1218141
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158225.html
- http://lists.opensuse.org/opensuse-updates/2015-08/msg00014.html
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00047.html
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00097.html
- http://packetstormsecurity.com/files/131711/libtasn1-Heap-Overflow.html
- http://seclists.org/fulldisclosure/2015/Apr/109
- http://www.debian.org/security/2015/dsa-3256
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:232
- http://www.securityfocus.com/bid/74419
- http://www.securitytracker.com/id/1032246
- http://www.ubuntu.com/usn/USN-2604-1
- https://lists.gnu.org/archive/html/help-libtasn1/2015-04/msg00000.html
- https://security.gentoo.org/glsa/201509-04
Frequently Asked Questions
What is the severity of CVE-2015-3622?
CVE-2015-3622 is classified as a high severity vulnerability due to the potential for a heap-based buffer overflow that can lead to application crashes.
How do I fix CVE-2015-3622?
To fix CVE-2015-3622, update the libtasn1 library to version 4.5 or later.
Which software is affected by CVE-2015-3622?
CVE-2015-3622 affects libtasn1 versions up to 4.4, as well as specific versions of openSUSE and Fedora.
What is the nature of the flaw in CVE-2015-3622?
The flaw in CVE-2015-3622 is a heap-based buffer overflow that occurs when decoding certain DER-encoded input.
Can CVE-2015-3622 lead to security risks?
Yes, CVE-2015-3622 can lead to security risks by crashing applications and potentially allowing for exploitation in a malicious environment.
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