Input validation error in Botan and Fedora - CVE-2016-2850
Published: May 13, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU40296
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-2850
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate data.
Botan 1.11.x before 1.11.29 does not enforce TLS policy for (1) signature algorithms and (2) ECC curves, which allows remote attackers to conduct downgrade attacks via unspecified vectors.
Affected software
Botan
Fedora
Gentoo Linux
botan
Fedora
Gentoo Linux
botan
How to mitigate CVE-2016-2850
Install update from vendor's website.
botan - addressed in versions 1.10.13-1.el7, 1.10.13-1.fc22, 1.10.13-1.fc23, 1.10.13-1.fc24