CVE-2023-2295
First published: Wed Apr 26 2023(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2023-30570
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2187165
- https://access.redhat.com/errata/RHSA-2023:2122
- https://access.redhat.com/errata/RHSA-2023:2120
- https://access.redhat.com/security/cve/CVE-2023-2295
- https://access.redhat.com/errata/RHSA-2023:3107
- https://access.redhat.com/errata/RHSA-2023:3148
- https://access.redhat.com/security/cve/cve-2023-2295
- https://bugzilla.redhat.com/show_bug.cgi?id=2189777
Frequently Asked Questions
What is CVE-2023-2295?
CVE-2023-2295 is a vulnerability found in the libreswan library that occurs when an IKEv1 Aggressive Mode packet is received with only unacceptable crypto algorithms.
What is the severity of CVE-2023-2295?
The severity of CVE-2023-2295 is high, with a severity value of 7.5.
How does CVE-2023-2295 affect the Libreswan library?
CVE-2023-2295 affects the Libreswan library by allowing an attacker to send an IKEv1 Aggressive Mode packet with unacceptable crypto algorithms and receive a response packet without a zero responder SPI.
Which software versions are affected by CVE-2023-2295?
CVE-2023-2295 affects Libreswan versions 4.9-1.el8 and 4.9-1.el9, as well as Redhat Enterprise Linux versions 8.0, 9.0, 8.8, 9.2, and Redhat Enterprise Linux Server versions 8.8, 9.2, and 8.8.
How can I fix CVE-2023-2295?
To fix CVE-2023-2295, it is recommended to update to a patched version of the libreswan library or apply the necessary security patches provided by Redhat.
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