{"cve":"CVE-2012-3461","nvd":{"published":"2012-08-20T19:55:05.527","modified":"2026-06-16T23:43:16.033","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684121","http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001347.html","http://lists.cypherpunks.ca/pipermail/otr-dev/2012-July/001348.html","http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00016.html","http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00019.html"],"products":["cypherpunks:libotr"],"source":"nvd","synced_at":"2026-10-19T20:25:53.526315492+00:00"},"epss":{"cve":"CVE-2012-3461","score":0.03441,"percentile":0.88977,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}