SB2023070125 - Anolis OS update for libreswan

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2023070125

SB2023070125 - Anolis OS update for libreswan

Published: July 1, 2023 Updated: March 28, 2025

Security Bulletin ID SB2023070125
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2023-2295)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a missing patch for #VU75709 (CVE-2023-30570). A remote attacker can send a specially crafted IKEv1 Aggressive Mode packet to the daemon and crash it.



2) Input validation error (CVE-ID: CVE-2023-30570)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect handling of unsupported algorithms (such as DH2) when processing IKEv1 Aggressive Mode packets in libreswan pluto daemon. A remote attacker can send a specially crafted IKEv1 Aggressive Mode packet to the daemon and crash it.

Successful exploitation of the vulnerability requires that the libreswan pluto daemon is configured explicitly with "aggressive=yes" (or "aggrmode=yes") and accepts IKEv1 packets.


Remediation

Install update from vendor's website.

References