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-dev, dnsutils, bind9-libs, bind9-host, bind9-utils, bind9utils, bind9-dnsutils, bind9-doc, bind9
- USN-6657-1: dnsmasq-base-lua, dnsmasq, dnsmasq-utils, dnsmasq-base
- USN-6665-1: python-unbound, libunbound-dev, unbound-host, python3-unbound, libunbound8, unbound, unbound-anchor
- USN-6723-1: libirs-export160, libisc95, libdns162, libisccfg-export140, libbind9-140, libisc-export160, libdns1100, libbind9-90, libisccc90, bind9, libisc160, libisccfg160, libisccc-export140, liblwres160, libirs141, bind9utils, host, libisccfg-export160, libirs-export141, libbind-dev, dnsutils, libisccfg90, bind9-host, lwresd, libisccc160, libisccfg140, libdns-export162, libisccc-export160, libisc169, libbind-export-dev, libisc-export169, liblwres141, libbind9-160, liblwres90, libisccc-export140-udeb, libdns100, libisccc140, libirs160, libdns-export1100, bind9-doc
- USN-6657-2: dnsmasq-base-lua, dnsmasq, dnsmasq-utils, dnsmasq-base