Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian Linux | 8.0 |
| Fedoraproject | Fedora | 24 |
| Botan Project | Botan | 1.10.12 |
Related Weaknesses (CWE)
References
- http://botan.randombit.net/security.htmlVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183669.html
- http://marc.info/?l=botan-devel&m=146185420505943&w=2Vendor Advisory
- http://www.debian.org/security/2016/dsa-3565
- https://security.gentoo.org/glsa/201701-23
- http://botan.randombit.net/security.htmlVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183669.html
- http://marc.info/?l=botan-devel&m=146185420505943&w=2Vendor Advisory
- http://www.debian.org/security/2016/dsa-3565
- https://security.gentoo.org/glsa/201701-23
FAQ
What is CVE-2016-2849?
CVE-2016-2849 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 key...
How severe is CVE-2016-2849?
CVE-2016-2849 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-2849?
Check the references section above for vendor advisories and patch information. Affected products include: Debian Debian Linux, Fedoraproject Fedora, Botan Project Botan.