CVE-2011-4354

NameCVE-2011-4354
Descriptioncrypto/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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-2390-1
NVD severitymedium
Debian Bugs650621

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssl (PTS)jessie1.0.1t-1+deb8u8fixed
jessie (security)1.0.1t-1+deb8u12fixed
stretch1.1.0k-1~deb9u1fixed
stretch (security)1.1.0l-1~deb9u1fixed
buster, buster (security)1.1.1d-0+deb10u2fixed
bullseye, sid1.1.1d-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensslsource(unstable)0.9.8o-4squeeze3650621
opensslsourcelenny0.9.8g-15+lenny15DSA-2390-1
opensslsourcesqueeze0.9.8o-4squeeze5DSA-2390-1

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