PT-2023-18815 · Libreswan+3 · Libreswan+3
Paul Wouters
·
Published
2023-02-21
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Updated
2025-03-17
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CVE-2023-23009
CVSS v3.1
6.5
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Libreswan version 4.9
Description
The issue allows remote attackers to cause a denial of service, resulting in an assert failure and daemon restart, via a crafted TS payload with an incorrect selector length. This is due to a missing check in the Traffic Selector parsing code that would reject malformed Traffic Selector payloads, leading to a double free and crash of the pluto daemon. It is noted that there is no remote code execution.
Recommendations
For Libreswan version 4.9, consider updating to a version that includes the fix for this issue, as the current version is affected by the denial of service vulnerability.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Resource Exhaustion
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Centos
Libreswan
Red Hat