Unbound 1.6.4 through 1.9.4 contain a vulnerability in the ipsec module that can cause shell code execution after receiving a specially crafted answer. This issue can only be triggered if unbound was compiled with --enable-ipsecmod
support, and ipsecmod is enabled and used in the configuration.
lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html
lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
www.openwall.com/lists/oss-security/2019/11/19/1
github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MOCR6JP7MSRARTOGEHGST64G4FJGX5VK/
www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt
www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/