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librenswan: IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload

🗓️ 31 Aug 2026 04:16:47Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 3 Views

Unauthenticated DoS in Libreswan IKEv2 via crafted RSA-SHA1 AUTH payload causing assertion failure.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.4aarch64libreswan4.12-3.el9_4.2libreswan-4.12-3.el9_4.2.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64lelibreswan4.12-3.el9_4.2libreswan-4.12-3.el9_4.2.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xlibreswan4.12-3.el9_4.2libreswan-4.12-3.el9_4.2.s390x.rpm
Red Hat Enterprise Linux9.4x86_64libreswan4.12-3.el9_4.2libreswan-4.12-3.el9_4.2.x86_64.rpm

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31 Aug 2026 08:02Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.9 - 8.1
EPSS0.00346
SSVC
3