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openswan: denial of service via IKE daemon restart when receiving a bad DH gx value

🗓️ 04 Nov 2015 08:37:20Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 1 Views

Libreswan IKE daemon crashes on KE payload with g^x=0, enabling remote denial of service.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7ppc64lelibreswan0:3.15-5.ael7b_1libreswan-0:3.15-5.ael7b_1.ppc64le.rpm
Red Hat Enterprise Linux7ppc64libreswan0:3.15-5.el7_1libreswan-0:3.15-5.el7_1.ppc64.rpm
Red Hat Enterprise Linux7s390xlibreswan0:3.15-5.el7_1libreswan-0:3.15-5.el7_1.s390x.rpm
Red Hat Enterprise Linux7x86_64libreswan0:3.15-5.el7_1libreswan-0:3.15-5.el7_1.x86_64.rpm
Red Hat Enterprise Linux7ppc64lelibreswan-debuginfo0:3.15-5.ael7b_1libreswan-debuginfo-0:3.15-5.ael7b_1.ppc64le.rpm
Red Hat Enterprise Linux7ppc64libreswan-debuginfo0:3.15-5.el7_1libreswan-debuginfo-0:3.15-5.el7_1.ppc64.rpm
Red Hat Enterprise Linux7s390xlibreswan-debuginfo0:3.15-5.el7_1libreswan-debuginfo-0:3.15-5.el7_1.s390x.rpm
Red Hat Enterprise Linux7x86_64libreswan-debuginfo0:3.15-5.el7_1libreswan-debuginfo-0:3.15-5.el7_1.x86_64.rpm

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25 Jun 2026 10:44Current
5.8Medium risk
Vulners AI Score5.8
CVSS 24.3
EPSS0.02765
1