CVE-2012-3461

mediumpriority · track · 18EPSS 0.034 · 89 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

3.44% (89th) EPSS

CVSS 4.3 · medium

Is it mine?

8 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–4.3

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Psecondary · FSTEC (BDU) RU

v2.03.7lowAV:N/AC:M/Au:N/C:N/I:N/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119US

affected products (8)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Gentoo Foundation Inc. Gentoo Linux≤ 20140826fstec_bduRU
Novell Inc. SUSE Linux Enterprise≤ Server 11 SP2fstec_bduRU
Novell Inc. SUSE Linux Enterprise≤ Desktop 10 SP4fstec_bduRU
Novell Inc. SUSE Linux Enterprise≤ Desktop 11 SP2fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 6fstec_bduRU
cypherpunks libotr≤ 3.2.0nvdUScpe:2.3:a:cypherpunks:libotr:*:*:*:*:*:*:*:*
cypherpunks libotr= 3.1.0nvdUScpe:2.3:a:cypherpunks:libotr:*:*:*:*:*:*:*:*

also known as (11)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2012-08-20modified 2026-06-16

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+21039 more

references (49)

External citations — patches, advisories, analysis.

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