CVE-2016-2849
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
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.
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | 8.0 | affected | |
| fedora | 24 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| 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 | |
| botan_project | botan | 1.11.9 | |
| botan_project | botan | 1.11.10 | |
| botan_project | botan | 1.11.11 | |
| botan_project | botan | 1.11.12 | |
| botan_project | botan | 1.11.13 | |
| botan_project | botan | 1.11.14 | |
| botan_project | botan | 1.11.15 | |
| botan_project | botan | 1.11.16 | |
| botan_project | botan | 1.11.17 | |
| botan_project | botan | 1.11.18 | |
| botan_project | botan | 1.11.19 | |
| botan_project | botan | 1.11.20 | |
| botan_project | botan | 1.11.21 | |
| botan_project | botan | 1.11.22 | |
| botan_project | botan | 1.11.23 | |
| botan_project | botan | 1.11.24 | |
| botan_project | botan | 1.11.25 | |
| botan_project | botan | 1.11.26 | |
| botan_project | botan | 1.11.27 | |
| botan_project | botan | 1.11.28 | |
References
- https://www.suse.com/security/cve/CVE-2016-2849.html
- http://botan.randombit.net/security.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183669.html
- http://marc.info/?l=botan-devel&m=146185420505943&w=2
- http://www.debian.org/security/2016/dsa-3565
- https://security.gentoo.org/glsa/201701-23
CWEs
CWE-200
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.