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CVE-2017-9526

Published: 10 June 2017

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

Priority

Low

CVSS 3 base score: 5.9

Status

Package Release Status
libgcrypt11
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Not vulnerable

trusty Not vulnerable
(1.5.3-2ubuntu4.4)
upstream Not vulnerable

xenial Does not exist

yakkety Does not exist

zesty Does not exist

libgcrypt20
Launchpad, Ubuntu, Debian
artful Not vulnerable
(1.7.6-2)
bionic Not vulnerable
(1.7.6-2)
cosmic Not vulnerable
(1.7.6-2)
disco Not vulnerable
(1.7.6-2)
precise Does not exist

trusty Does not exist
(trusty was needed)
upstream
Released (1.7.6-2)
xenial
Released (1.6.5-2ubuntu0.3)
yakkety
Released (1.7.2-2ubuntu1.1)
zesty
Released (1.7.6-1ubuntu0.1)