Description
Botan before 1.10.13 and 1.11.x before 1.11.29 do not use a constant-time algorithm to perform a modular inverse on the signature nonce k, which might allow remote attackers to obtain ECDSA secret keys via a timing side-channel attack.
References (5)
Core 5
Core References
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183669.html
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2016/dsa-3565
Vendor Advisory mailing-list
x_refsource_mlist
http://marc.info/?l=botan-devel&m=146185420505943&w=2
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201701-23
Vendor Advisory x_refsource_confirm
http://botan.randombit.net/security.html
Scores
CVSS v3
7.5
EPSS
0.0244
EPSS Percentile
82.3%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-200
Status
published
Products (32)
botan_project/botan
1.10.12
botan_project/botan
1.11.0
botan_project/botan
1.11.1
botan_project/botan
1.11.2
botan_project/botan
1.11.3
botan_project/botan
1.11.4
botan_project/botan
1.11.5
botan_project/botan
1.11.6
botan_project/botan
1.11.7
botan_project/botan
1.11.8
... and 22 more
Published
May 13, 2016
Tracked Since
Feb 18, 2026