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Fedora 38: FEDORA-2023-ddd6e6b49b Moderate: Libreswan DoS Attacks

fedora
Calendar Grey August 20, 2023
Dist Fedora Esm H88
Recent Libreswan updates on Fedora enhance security against post-authentication DoS vulnerabilities. Users are urged to upgrade for essential CVE fixes and better protection
Update to 4.12 for CVE-2023-38710, CVE-2023-38711 and CVE-2023-38712 addressing post-authentication denial of service attacks

Summary

Libreswan is a free implementation of IPsec & 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. Everything passing

through the untrusted net is encrypted by the ipsec gateway machine and

decrypted by the gateway at the other end of the tunnel. The resulting

tunnel is a virtual private network or VPN.

This package contains the daemons and userland tools for setting up

Libreswan.

Libreswan also supports IKEv2 (RFC7296) and Secure Labeling

Libreswan is based on Openswan-2.6.38 which in turn is based on FreeS/WAN-2.04

Update Information:

Update to 4.12 for CVE-2023-38710, CVE-2023-38711 and CVE-2023-38712 addressing post-authentication denial of service attacks

Topics%20covered

Topics Covered

security advisory network security update Fedora patch DoS fix Libreswan

Change Log

* Fri Aug 11 2023 Paul Wouters - 4.11-1.1 - Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild

References


[ 1 ] Bug #2215952 - CVE-2023-38711 libreswan: Invalid IKEv1 Quick Mode ID causes restart https://bugzilla.redhat.com/show_bug.cgi?id=2215952 [ 2 ] Bug #2225368 - CVE-2023-38710 libreswan: Invalid IKEv2 REKEY proposal causes restart https://bugzilla.redhat.com/show_bug.cgi?id=2225368 [ 3 ] Bug #2225369 - CVE-2023-38712 libreswan: Invalid IKEv1 repeat IKE SA delete causes crash and restart https://bugzilla.redhat.com/show_bug.cgi?id=2225369

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2023-ddd6e6b49b' at the command line. For more information, refer to the dnf documentation available at https://dnf.readthedocs.io/en/latest/command_ref.html

Name: libreswan
Product: Fedora 38
Version: 4.12
Release: 1.fc38
URL: https://libreswan.org/
Summary: Internet Key Exchange (IKEv1 and IKEv2) implementation for IPsec

Topics%20covered

Topics Covered

security advisory network security update Fedora patch DoS fix Libreswan

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