vulnwire
7.5high

CVE-2016-2849

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,…

Published 10 y ago · modified 4 mo ago · JSON

CVSS
7.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
2.5%
percentile 85%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

2.46% probability of exploitation in the next 30 days, higher than 85% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.07.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD2.05.0AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

  • lists.fedoraproject.org /pipermail/package-announce/2016-May/183669.html · vendor-advisory, x_refsource_FEDORA, x_transferred
  • debian.org /security/2016/dsa-3565 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • marc.info /?l=botan-devel&m=146185420505943&w=2 · mailing-list, x_refsource_MLIST, x_transferred
  • security.gentoo.org /glsa/201701-23 · vendor-advisory, x_refsource_GENTOO, x_transferred
  • botan.randombit.net /security.html · x_refsource_CONFIRM, x_transferred

Sources

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