Date: Tue, 13 Oct 2020 13:13:59 +0200 From: Otto Moerbeek <otto.moerbeek@...n-xchange.com> To: oss-security@...ts.openwall.com Subject: PowerDNS Recursor 4.3.5, 4.2.5. and 4.1.18 released fixing a cache pollution issue (CVE-2020-25829) Hello!, Today we are releasing PowerDNS Recursor 4.3.5, 4.2.5. and 4.1.18, containing a security fix for CVE-2020-25829: An issue has been found in PowerDNS Recursor where a remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installations that always validate (dnssec=validate) and for clients requesting validation when on-demand validation is enabled (dnssec=process). The severity is high for these cases. As usual, there were also other smaller enhancements and bugfixes. Please refer to the 4.3.5 changelog, 4.2.5 changelog and 4.1.18 changelog for details. The 4.3.5 tarball (signature), 4.2.5 tarball (signature) and 4.1.18 tarball (signature) are available at our download site and packages for CentOS 6, 7 and 8, Debian Stretch and Buster, Ubuntu Xenial and Bionic are available from our repository. 4.0 and older releases are EOL, refer to the documentation for details about our release cycles. Please send us all feedback and issues you might have via the mailing list, or in case of a bug, via GitHub. Regards, -Otto and the PowerDNS Team  https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html  https://doc.powerdns.com/recursor/changelog/4.3.html#change-4.3.5  https://doc.powerdns.com/recursor/changelog/4.2.html#change-4.2.5  https://doc.powerdns.com/recursor/changelog/4.1.html#change-4.1.18  https://downloads.powerdns.com/releases/pdns-recursor-4.3.5.tar.bz2  https://downloads.powerdns.com/releases/pdns-recursor-4.3.5.tar.bz2.sig  https://downloads.powerdns.com/releases/pdns-recursor-4.2.5.tar.bz2  https://downloads.powerdns.com/releases/pdns-recursor-4.2.5.tar.bz2.sig  https://downloads.powerdns.com/releases/pdns-recursor-4.1.18.tar.bz2  https://downloads.powerdns.com/releases/pdns-recursor-4.1.18.tar.bz2.sig  https://downloads.powerdns.com/releases/  https://repo.powerdns.com/  https://docs.powerdns.com/recursor/appendices/EOL.html  https://mailman.powerdns.com/mailman/listinfo/pdns-users  https://github.com/PowerDNS/pdns/issues/new/choose -- kind regards, Otto Moerbeek Senior PowerDNS Developer Email: otto.moerbeek@...n-xchange.com Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)
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