CVE-2018-0734

NameCVE-2018-0734
DescriptionThe OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.1a-dev (Affected 1.1.1). Fixed in OpenSSL 1.1.0j-dev (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q-dev (Affected 1.0.2-1.0.2p).
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)

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+deb9u2vulnerable
buster, sid1.1.1-2vulnerable
openssl1.0 (PTS)stretch (security), stretch1.0.2l-2+deb9u3vulnerable
buster, sid1.0.2o-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensslsource(unstable)(unfixed)
opensslsourcejessie(not affected)
openssl1.0source(unstable)(unfixed)

Notes

[stretch] - openssl <postponed> (Wait for next DSA and upstream release)
[jessie] - openssl <not-affected> (vulnerable code not present)
[stretch] - openssl1.0 <postponed> (Wait for next DSA and upstream release)
https://www.openssl.org/news/secadv/20181030.txt
OpenSSL_1_1_1-stable: https://git.openssl.org/?p=openssl.git;a=commit;h=8abfe72e8c1de1b95f50aa0d9134803b4d00070f
OpenSSL_1_1_0-stable: https://git.openssl.org/?p=openssl.git;a=commit;h=ef11e19d1365eea2b1851e6f540a0bf365d303e7
OpenSSL_1_0_2-stable: https://git.openssl.org/?p=openssl.git;a=commit;h=43e6a58d4991a451daf4891ff05a48735df871ac

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