CVE-2023-2295

moderate-risk
Published 2023-05-17

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.

Do I need to act?

~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (9)

Libreswan
Libreswan

Affected Vendors

Redhat Libreswan

References (8)

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
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
45
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 4/34 · Minimal
Exposure 15/34 · Moderate