CVE-2015-3193

NameCVE-2015-3193
DescriptionThe Montgomery squaring implementation in crypto/bn/asm/x86_64-mont5.pl in OpenSSL 1.0.2 before 1.0.2e on the x86_64 platform, as used by the BN_mod_exp function, mishandles carry propagation and produces incorrect output, which makes it easier for remote attackers to obtain sensitive private-key information via an attack against use of a (1) Diffie-Hellman (DH) or (2) Diffie-Hellman Ephemeral (DHE) ciphersuite.
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)
NVD severitymedium (attack range: remote)

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+deb8u9fixed
stretch (security), stretch1.1.0f-3+deb9u2fixed
buster1.1.0h-4fixed
sid1.1.1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensslsource(unstable)1.0.2e-1medium
opensslsourcejessie(not affected)
opensslsourcesqueeze(not affected)
opensslsourcewheezy(not affected)

Notes

[jessie] - openssl <not-affected> (Only affects 1.0.2)
[wheezy] - openssl <not-affected> (Only affects 1.0.2)
[squeeze] - openssl <not-affected> (Only affects 1.0.2)
https://www.openssl.org/news/secadv/20151203.txt

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