CVE-2012-3461

CVE Descriptions

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.

CVE Informations

Related Weaknesses

CWE-ID	Weakness Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Metrics

Metrics	Score	Severity	CVSS Vector	Source
V2	4.3		AV:N/AC:M/Au:N/C:N/I:N/A:P	nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

Date	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	3.41%	–	–
2022-02-20	–	–	3.41%	–	–
2022-04-03	–	–	3.41%	–	–
2022-06-26	–	–	3.41%	–	–
2023-02-26	–	–	3.41%	–	–
2023-03-12	–	–	–	4.23%	–
2024-02-11	–	–	–	4.23%	–
2024-03-24	–	–	–	3.61%	–
2024-04-14	–	–	–	3.61%	–
2024-06-02	–	–	–	3.61%	–
2024-06-02	–	–	–	3.61%	–
2025-01-19	–	–	–	3.61%	–
2025-03-18	–	–	–	–	4.58%
2025-03-30	–	–	–	–	4.58%
2025-04-15	–	–	–	–	4.58%
2025-04-15	–	–	–	–	4.58,%

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

EPSS First.org

Date	Percentile
2022-02-06	66%
2022-02-20	67%
2022-04-03	83%
2022-06-26	84%
2023-02-26	85%
2023-03-12	91%
2024-02-11	92%
2024-03-24	91%
2024-04-14	92%
2024-06-02	92%
2024-06-02	92%
2025-01-19	92%
2025-03-18	89%
2025-03-30	88%
2025-04-15	89%
2025-04-15	89%