USN-6642-1: Bind vulnerabilities
19 February 2024
Several security issues were fixed in Bind.
Releases
Packages
- bind9 - Internet Domain Name Server
Details
Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered
that Bind incorrectly handled parsing large DNS messages. A remote attacker
could possibly use this issue to cause Bind to consume resources, leading
to a denial of service. (CVE-2023-4408)
Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered
that Bind icorrectly handled validating DNSSEC messages. A remote attacker
could possibly use this issue to cause Bind to consume resources, leading
to a denial of service. (CVE-2023-50387)
It was discovered that Bind incorrectly handled preparing an NSEC3 closest
encloser proof. A remote attacker could possibly use this issue to cause
Bind to consume resources, leading to a denial of service. (CVE-2023-50868)
It was discovered that Bind incorrectly handled reverse zone queries when
nxdomain-redirect is enabled. A remote attacker could possibly use this
issue to cause Bind to crash, leading to a denial of service.
(CVE-2023-5517)
It was discovered that Bind incorrectly handled certain specific recursive
query patterns. A remote attacker could possibly use this issue to cause
Bind to consume memory, leading to a denial of service. (CVE-2023-6516)
Bind has been updated to 9.6.48. In addition to security fixes, the updated
packages contain bug fixes, new features, and possibly incompatible
changes.
Please see the following for more information:
https://downloads.isc.org/isc/bind9/9.16.48/doc/arm/html/notes.html
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04
This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.
Related notices
- USN-6633-1: bind9-doc, bind9-libs, bind9-host, dnsutils, bind9-dev, bind9-utils, bind9-dnsutils, bind9, bind9utils
- USN-6657-1: dnsmasq-utils, dnsmasq-base, dnsmasq-base-lua, dnsmasq
- USN-6665-1: unbound-anchor, python-unbound, unbound, libunbound-dev, python3-unbound, libunbound8, unbound-host
- USN-6723-1: liblwres90, libisccc140, libirs-export160, libirs160, liblwres141, lwresd, libisccfg160, libdns-export162, libisccc160, libisccc90, libdns1100, libbind9-160, dnsutils, libisc95, libdns-export1100, libirs-export141, libisccfg-export160, bind9, bind9-doc, libbind9-90, liblwres160, libdns162, libisccc-export140-udeb, libbind9-140, bind9-host, libisc-export160, libisccfg90, host, libisc-export169, libisc160, libdns100, bind9utils, libisccfg-export140, libisccc-export140, libirs141, libbind-dev, libisc169, libisccc-export160, libbind-export-dev, libisccfg140
- USN-6657-2: dnsmasq-utils, dnsmasq-base, dnsmasq-base-lua, dnsmasq