CVE-2011-4354

描述

crypto/bn/bn_nist.c in OpenSSL before 0.9.8h on 32-bit platforms, as used in stunnel and other products, in certain circumstances involving ECDH or ECDHE cipher suites, uses an incorrect modular reduction algorithm in its implementation of the P-256 and P-384 NIST elliptic curves, which allows remote attackers to obtain the private key of a TLS server via multiple handshake attempts.

如何修補 CVE-2011-4354

要修補 CVE-2011-4354,請將受影響套件升級到下列已修補版本。

• Debian/openssl—升級至 0.9.8o-4squeeze3 或更新版本

CVE-2011-4354 正在被利用嗎?

低 — EPSS 為 4.0%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 0.9.8o-4squeeze3

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2011-4354