SB2021110827 - Fedora 34 update for botan2
Published: November 8, 2021
Security Bulletin ID
SB2021110827
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of a broken or risky cryptographic algorithm (CVE-ID: CVE-2021-40529)
CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to incorrect ElGamal implementation in Botan, which allows plaintext recovery. A remote attacker can perform a cross-configuration attack against OpenPGP and recover encrypted data.
Remediation
Install update from vendor's website.