CVE-2018-12437

NameCVE-2018-12437
DescriptionLibTomCrypt through 1.18.1 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
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 severitylow
Debian Bugs901626

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libtomcrypt (PTS)stretch1.17-9vulnerable
buster1.18.2-1fixed
bullseye, sid1.18.2-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libtomcryptsource(unstable)1.18.2-1low901626

Notes

[stretch] - libtomcrypt <no-dsa> (Minor issue)
[jessie] - libtomcrypt <no-dsa> (Minor issue)
https://github.com/libtom/libtomcrypt/issues/407
https://github.com/libtom/libtomcrypt/pull/408

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