Description
An "incorrect assumption" in the authvalidated validator function in BIND 9.3.0, when DNSSEC is enabled, allows remote attackers to cause a denial of service (named server exit) via crafted DNS packets that cause an internal consistency test (self-check) to fail.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | bind9 | 1:9.3.1 | — |
| Debian 13 | bind9 | 1:9.3.1 | — |
| Debian 12 | bind9 | 1:9.3.1 | — |
References
- 2005-0003 vendor-advisory
- 12365 vdb-entry
- http://www.isc.org/index.pl?/sw/bind/bind9.php
- http://www.uniras.gov.uk/niscc/docs/al-20050125-00060.html
- 14008 third-party-advisory
- http://www.isc.org/index.pl?/sw/bind/bind-security.php
- VU#938617 third-party-advisory
- 1012995 vdb-entry
- bind-named-dns-dos(19062) vdb-entry