Affected: AlmaLinux:8: libreswan

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

* libreswan: Regression of CVE-2023-30570 fixes in the AlmaLinux (CVE-2023-2295)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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.

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.

libreswan: Regression of CVE-2023-30570 fixes in the Red Hat Enterprise Linux libreswan: remote DoS via crafted TS payload with an incorrect selector length libreswan: Malicious IKEv1 Aggressive Mode packets can crash libreswan libreswan: Invalid IKEv2 REKEY proposal causes restart libreswan: Invalid IKEv1 Quick Mode ID causes restart libreswan: Invalid IKEv1 repeat IKE SA delete causes crash and restart libreswan: Missing PreSharedKey for connection can cause crash libreswan: IKEv1 default AH/ESP responder can crash and restart

libreswan: Regression of CVE-2023-30570 fixes in the Red Hat Enterprise Linux

Affected: Ubuntu:18.04:LTS: libreswan, Ubuntu:20.04:LTS: libreswan, Ubuntu:22.04:LTS: libreswan, Ubuntu:24.04:LTS: libreswan, Ubuntu:25.10: libreswan, Ubuntu:26.04:LTS: libreswan

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.