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CVE-2018-12435

Published: 15 June 2018

Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Notes

AuthorNote
msalvatore
From the release notes, "versions before 2.5.0 are not affected"
Priority

Medium

CVSS 3 base score: 5.9

Status

Package Release Status
botan
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(code not present)
cosmic Not vulnerable
(2.6.0-3)
disco Not vulnerable
(2.6.0-3)
eoan Not vulnerable
(2.6.0-3)
precise Does not exist

trusty Does not exist

upstream
Released (2.6.0-3)
xenial Does not exist

Patches:
upstream: https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3
botan1.10
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic Not vulnerable
(code not present)
cosmic Ignored
(reached end-of-life)
disco Does not exist

eoan Does not exist

precise Does not exist

trusty Does not exist
(trusty was needs-triage)
upstream Not vulnerable
(debian: Issue introduced in 2.5.0)
xenial Not vulnerable
(code not present)