CVE-2015-2721
nss - security update
EPSS 3.3%
描述
Mozilla Network Security Services (NSS) before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle attackers to defeat cryptographic protection mechanisms by blocking messages, as demonstrated by removing a forward-secrecy property by blocking a ServerKeyExchange message, aka a "SMACK SKIP-TLS" issue.
如何修補 CVE-2015-2721
要修補 CVE-2015-2721,請將受影響套件升級到下列已修補版本。
- Debian/icedove—升級至 31.8.0-1~deb7u1 或更新版本
- —升級至 31.8.0esr-1~deb7u1 或更新版本
- —升級至 2:3.19.1-1 或更新版本
- —升級至 3.12.8-1+squeeze12 或更新版本
- —升級至 2:3.14.5-1+deb7u5 或更新版本
CVE-2015-2721 正在被利用嗎?
低 — EPSS 為 3.3%,目前沒有觀察到大規模利用活動。
受影響套件(5)
- from 0, < 31.8.0-1~deb7u1
- from 0, < 31.8.0esr-1~deb7u1
- from 0, < 2:3.19.1-1
- from 0, < 3.12.8-1+squeeze12
- from 0, < 2:3.14.5-1+deb7u5