{"id":"CVE-2012-3461","aliases":["DEBIAN-CVE-2012-3461","DSA-2526-1","EUVD-2012-3421","GHSA-gwfv-2hfv-wqmr"],"status":"published","title":"The (1) otrl_base64_otr_decode function in src/b64.c; (2) otrl_proto_data_read_flags and (3)...","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.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03441,"percentile":0.89059,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2012-08-12T00:00:00Z","modified":"2026-10-23T17:47:41Z","fixes":[{"ecosystem":"Debian:12","package":"libotr","fixed_in":["3.2.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libotr","fixed_in":["3.2.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libotr","fixed_in":["3.2.1-1"],"sources":["osv"]},{"ecosystem":"Debian:6.0","package":"libotr","fixed_in":["3.2.0-2+squeeze1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libotr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libotr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libotr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.1-1"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"libotr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.0-2+squeeze1"}]}],"versions":["3.2.0-2"]}],"products":[{"vendor":"cypherpunks","product":"libotr"}],"references":[{"url":"http://www.debian.org/security/2012/dsa-2526","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00019.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/77528","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=846377","tags":["x_refsource_MISC","x_transferred","report"]},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2013:097","tags":["vendor-advisory","x_refsource_MANDRIVA","x_transferred","advisory"]},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2012:131","tags":["vendor-advisory","x_refsource_MANDRIVA","x_transferred","advisory"]},{"url":"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=b17232f86f8e60d0d22caf9a2400494d3c77da58","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001347.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001348.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684121","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"http://www.ubuntu.com/usn/USN-1541-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00016.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=1902baee5d4b056850274ed0fa8c2409f1187435","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00019.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr%3Ba=commitdiff%3Bh=6d4ca89cf1d3c9a8aff696c3a846ac5a51f762c1","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/54907","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-3461"},{"url":"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=1902baee5d4b056850274ed0fa8c2409f1187435"},{"url":"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=6d4ca89cf1d3c9a8aff696c3a846ac5a51f762c1"},{"url":"http://otr.git.sourceforge.net/git/gitweb.cgi?p=otr/libotr;a=commitdiff;h=b17232f86f8e60d0d22caf9a2400494d3c77da58"},{"url":"https://github.com/advisories/GHSA-gwfv-2hfv-wqmr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2012-3461","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2012-3461","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.","status":"published","published":"2012-08-20T19:00:00Z","modified":"2024-08-06T20:05:12.525Z","updated_at":"2026-11-02T14:34:50.94153Z"}],"euvd":[{"id":"EUVD-2012-3421","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.","status":"published","published":"2012-08-20T19:00:00Z","modified":"2024-08-06T20:05:12Z","updated_at":"2026-11-03T01:56:10.882899Z"}],"ghsa":[{"id":"GHSA-gwfv-2hfv-wqmr","title":"The (1) otrl_base64_otr_decode function in src/b64.c; (2) otrl_proto_data_read_flags and (3)...","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.","status":"published","published":"2022-05-17T01:44:00Z","modified":"2023-02-20T05:06:00Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:54:11.398505Z"}],"nvd":[{"id":"CVE-2012-3461","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.","status":"published","published":"2012-08-20T19:55:05.527Z","modified":"2026-06-16T23:43:16.033Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:15.188652Z"}],"osv":[{"id":"CVE-2012-3461","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.","status":"published","published":"2012-08-20T19:55:05Z","modified":"2026-04-10T03:43:12.409534Z","updated_at":"2026-11-02T15:43:58.537032Z"},{"id":"DEBIAN-CVE-2012-3461","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.","status":"published","published":"2012-08-20T19:55:05.527Z","modified":"2026-10-23T17:47:41.512053885Z","updated_at":"2026-11-02T15:45:24.92418Z"},{"id":"DSA-2526-1","title":"libotr - buffer overflow","status":"published","published":"2012-08-12T00:00:00Z","modified":"2026-03-09T01:22:41.932592Z","updated_at":"2026-11-02T15:46:15.489951Z"}]}}