CVE-2023-2295
HIGHlibreswan - Denial of Service via IKEv1 Aggressive Mode Packet Handling
Title source: llmDescription
A vulnerability was found in the libreswan library. This security issue occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms, and the response packet is not sent with a zero responder SPI. When a subsequent packet is received where the sender reuses the libreswan responder SPI as its own initiator SPI, the pluto daemon state machine crashes. No remote code execution is possible. This CVE exists because of a CVE-2023-30570 security regression for libreswan package in Red Hat Enterprise Linux 8.8 and Red Hat Enterprise Linux 9.2.
References (4)
Core 4
Core References
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:3107
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:3148
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-2295
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2189777
Scores
CVSS v3
7.5
EPSS
0.0140
EPSS Percentile
80.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-400
Status
published
Products (9)
libreswan/libreswan
4.9-1.el8
libreswan/libreswan
4.9-1.el9
redhat/enterprise_linux
8.0
redhat/enterprise_linux
9.0
redhat/enterprise_linux_eus
8.8
redhat/enterprise_linux_eus
9.2
redhat/enterprise_linux_server_aus
8.8
redhat/enterprise_linux_server_aus
9.2
redhat/enterprise_linux_server_tus
8.8
Published
May 17, 2023
Tracked Since
Feb 18, 2026