QID 356434

Date Published: 2023-10-31

QID 356434: Amazon Linux Security Advisory for libreswan : ALAS2-2023-2299

A null pointer dereference vulnerability was found in the libreswan package.
When an ikev1 isakmp sa informational exchange packet contains a delete/notify payload followed by further notifies that act on the isakmp sa, such as a duplicated delete/notify message, a null pointer dereference on the deleted state occurs.
This flaw allows a malicious client or attacker to send a malformed ikev1 delete/notify packet, causing a crash and restarting the libreswan pluto daemon.
When sent continuously, this could lead to a denial of service attack. (
( CVE-2023-38712)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2023-2299 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 356434

    CVE-2023-38712 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2023-2299 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2023-2299.html
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