SB2023012659 - SUSE update for samba
Published: January 26, 2023
Security Bulletin ID
SB2023012659
Severity
High
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Race condition (CVE-ID: CVE-2021-20251)
The vulnerability allows a remote attacker to perform a brute-force attack.
The vulnerability exists due to a race condition in Samba when incrementing bad password attempts. Each connection to Samba gets a separate process, and each process loads, increments, and saves the bad password count without any coordination. A remote attacker can perform a brute-force attack using multiple threats and bypass imposed limits on the number of allowed incorrect passwords.2) Use of a broken or risky cryptographic algorithm (CVE-ID: CVE-2022-38023)
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to security features bypass in Netlogon RPC. A remote attacker can bypass the Netlogon cryptography feature for signing and sealing traffic during Netlogon authentication.
Remediation
Install update from vendor's website.