VULNERABILITY INTELLIGENCE
CVE-2012-3461
CVSS score4.3 MEDIUM
EPSS probability3.44%
CISA KEVNot currently listed
Published2012-08-20
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:P
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.
Weakness classification
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer