CVE-2015-2141

NameCVE-2015-2141
DescriptionThe InvertibleRWFunction::CalculateInverse function in rw.cpp in libcrypt++ 5.6.2 does not properly blind private key operations for the Rabin-Williams digital signature algorithm, which allows remote attackers to obtain private keys via a timing attack.
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)
ReferencesDLA-262-1, DSA-3296-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libcrypto++ (PTS)jessie (security), jessie5.6.1-6+deb8u3fixed
stretch5.6.4-7fixed
buster5.6.4-8fixed
bullseye, sid5.6.4-9fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libcrypto++source(unstable)5.6.1-7
libcrypto++sourcejessie5.6.1-6+deb8u1DSA-3296-1
libcrypto++sourcesqueeze5.6.0-6+deb6u1DLA-262-1
libcrypto++sourcewheezy5.6.1-6+deb7u1DSA-3296-1

Notes

https://github.com/weidai11/cryptopp/commit/9425e16437439e68c7d96abef922167d68fafaff
https://eprint.iacr.org/2015/368

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