SB2023081813 - Remote code execution in strongSwan
Published: August 18, 2023
Security Bulletin ID
SB2023081813
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Expired pointer dereference (CVE-ID: CVE-2023-26463)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to an error in libtls implementation that treats the public key from the peer's certificate as trusted, even if the certificate can't be verified successfully. A remote attacker can supply a self-signed certificate to a server that authenticates clients with a TLS-based EAP method like EAP-TLS, trigger an expired pointer dereference and crash the server or execute arbitrary code.
Remediation
Install update from vendor's website.