CVE-2016-2849

CVE	CVE-2016-2849
State	PUBLISHED
Assigner	mitre
Source Priority	CVE Program / NVD first with legacy fallback
Published	2016-05-13 14:59:10 UTC
Updated	2026-05-06 22:30:45 UTC
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.

Primary CVSS: v3.0 7.5 HIGH from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-200 | n/a

Version	Source	Type	Score	Severity	Vector
3.0	[email protected]	Primary	7.5	HIGH	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`
2.0	[email protected]	Primary	5		`AV:N/AC:L/Au:N/C:P/I:N/A:N`

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Access Vector

Network

Access Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

AV:N/AC:L/Au:N/C:P/I:N/A:N

Type	Vendor	Product	Version	Update	Edition	Language
Application	Botan Project	Botan	1.10.12	All	All	All
Application	Botan Project	Botan	1.11.0	All	All	All
Application	Botan Project	Botan	1.11.1	All	All	All
Application	Botan Project	Botan	1.11.10	All	All	All
Application	Botan Project	Botan	1.11.11	All	All	All
Application	Botan Project	Botan	1.11.12	All	All	All
Application	Botan Project	Botan	1.11.13	All	All	All
Application	Botan Project	Botan	1.11.14	All	All	All
Application	Botan Project	Botan	1.11.15	All	All	All
Application	Botan Project	Botan	1.11.16	All	All	All
Application	Botan Project	Botan	1.11.17	All	All	All
Application	Botan Project	Botan	1.11.18	All	All	All
Application	Botan Project	Botan	1.11.19	All	All	All
Application	Botan Project	Botan	1.11.2	All	All	All
Application	Botan Project	Botan	1.11.20	All	All	All
Application	Botan Project	Botan	1.11.21	All	All	All
Application	Botan Project	Botan	1.11.22	All	All	All
Application	Botan Project	Botan	1.11.23	All	All	All
Application	Botan Project	Botan	1.11.24	All	All	All
Application	Botan Project	Botan	1.11.25	All	All	All
Application	Botan Project	Botan	1.11.26	All	All	All
Application	Botan Project	Botan	1.11.27	All	All	All
Application	Botan Project	Botan	1.11.28	All	All	All
Application	Botan Project	Botan	1.11.3	All	All	All
Application	Botan Project	Botan	1.11.4	All	All	All
Application	Botan Project	Botan	1.11.5	All	All	All
Application	Botan Project	Botan	1.11.6	All	All	All
Application	Botan Project	Botan	1.11.7	All	All	All
Application	Botan Project	Botan	1.11.8	All	All	All
Application	Botan Project	Botan	1.11.9	All	All	All
Operating System	Debian	Debian Linux	8.0	All	All	All
Operating System	Fedoraproject	Fedora	24	All	All	All

Source	Vendor	Product	Version	Platforms
CNA	Na	N/a	affected n/a	Not specified

Reference	Source	Link	Tags
Botan: Multiple vulnerabilities (GLSA 201701-23) — Gentoo security	af854a3a-2127-422b-91ae-364da2661108	security.gentoo.org
Debian -- Security Information -- DSA-3565-1 botan1.10	af854a3a-2127-422b-91ae-364da2661108	www.debian.org
'[botan-devel] Botan 1.10.13 released' - MARC	af854a3a-2127-422b-91ae-364da2661108	marc.info	Vendor Advisory
Security — Botan	af854a3a-2127-422b-91ae-364da2661108	botan.randombit.net	Vendor Advisory
[SECURITY] Fedora 24 Update: botan-1.10.13-1.fc24	af854a3a-2127-422b-91ae-364da2661108	lists.fedoraproject.org
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.