ELA-599-1 bind9 security update

cache poisoning

2022-04-20
Packagebind9
Version1:9.9.5.dfsg-9+deb8u27
Related CVEs CVE-2021-25220


It was found that bind9, an internet domain name server, was vulnerable to cache poisoning. When using forwarders, bogus NS records supplied by, or via, those forwarders may be cached and used by named if it needs to recurse for any reason, causing it to obtain and pass on potentially incorrect answers.

This update corrects the regression in the isc-dhcp package. [ELA-584-2]



For Debian 8 jessie, these problems have been fixed in version 1:9.9.5.dfsg-9+deb8u27.

We recommend that you upgrade your bind9 packages.

Further information about Extended LTS security advisories can be found in the dedicated section of our website.