SB2022011205 - Denial of service in Libreswan
Published: January 12, 2022
Security Bulletin ID
SB2022011205
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2022-23094)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when processing malformed IKEv1 packets. A remote attacker can send specially crafted IKEv1 packet to the application, trigger a NULL pointer dereference error during a logging action on the rejected IKEv1 packet and crash the pluto daemon.
Remediation
Install update from vendor's website.