CVE-2012-3461
libotr - buffer overflow
EPSS 3.4%
描述
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.
如何修補 CVE-2012-3461
要修補 CVE-2012-3461,請將受影響套件升級到下列已修補版本。
- Debian/libotr—升級至 3.2.1-1 或更新版本
- —升級至 3.2.0-2+squeeze1 或更新版本
CVE-2012-3461 正在被利用嗎?
低 — EPSS 為 3.4%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 3.2.1-1
- from 0, < 3.2.0-2+squeeze1