National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2012-3461 Detail

Description

The (1) otrl_base64_otr_decode function in src/b64.c; (2) otrl_proto_data_read_flags and (3) otrl_proto_accept_data functions in src/proto.c; and (4) decode function in toolkit/parse.c in libotr before 3.2.1 allocates a zero-length buffer when decoding a base64 string, which allows remote attackers to cause a denial of service (application crash) via a message with the value "?OTR:===.", which triggers a heap-based buffer overflow.

Source:  MITRE      Last Modified:  08/20/2012

Quick Info

CVE Dictionary Entry:
CVE-2012-3461
Original release date:
08/20/2012
Last revised:
08/28/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.3 MEDIUM
Vector:
(AV:N/AC:M/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684121 External Source MISC http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684121
http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001347.html External Source MLIST [OTR-dev] 20120727 otrl_base64_otr_decode() function...
http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001348.html External Source MLIST [OTR-dev] 20120727 Re: otrl_base64_otr_decode() function...
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00016.html External Source SUSE openSUSE-SU-2012:1525
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00019.html External Source SUSE SUSE-SU-2012:1578
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00019.html External Source SUSE openSUSE-SU-2013:0155
http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=1902baee5d4b056850274ed0fa8c2409f1187435 Exploit; Patch External Source CONFIRM http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=1902baee5d4b056850274ed0fa8c2409f1187435
http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=6d4ca89cf1d3c9a8aff696c3a846ac5a51f762c1 Exploit; Patch External Source CONFIRM http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=6d4ca89cf1d3c9a8aff696c3a846ac5a51f762c1
http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=b17232f86f8e60d0d22caf9a2400494d3c77da58 Exploit; Patch External Source CONFIRM http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=b17232f86f8e60d0d22caf9a2400494d3c77da58
http://www.debian.org/security/2012/dsa-2526 External Source DEBIAN DSA-2526
http://www.mandriva.com/security/advisories?name=MDVSA-2012:131 External Source MANDRIVA MDVSA-2012:131
http://www.mandriva.com/security/advisories?name=MDVSA-2013:097 External Source MANDRIVA MDVSA-2013:097
http://www.securityfocus.com/bid/54907 External Source BID 54907
http://www.ubuntu.com/usn/USN-1541-1 External Source UBUNTU USN-1541-1
https://bugzilla.redhat.com/show_bug.cgi?id=846377 External Source MISC https://bugzilla.redhat.com/show_bug.cgi?id=846377
https://exchange.xforce.ibmcloud.com/vulnerabilities/77528 External Source XF libotr-base64-bo(77528)

Technical Details

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