USN-5626-2: Bind vulnerabilities
21 September 2022
Several security issues were fixed in Bind.
Releases
Packages
- bind9 - Internet Domain Name Server
Details
USN-5626-1 fixed several vulnerabilities in Bind. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind
incorrectly handled large delegations. A remote attacker could possibly use
this issue to reduce performance, leading to a denial of service.
(CVE-2022-2795)
It was discovered that Bind incorrectly handled memory when processing
ECDSA DNSSEC verification. A remote attacker could use this issue to
consume resources, leading to a denial of service. (CVE-2022-38177)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
-
bind9
-
1:9.10.3.dfsg.P4-8ubuntu1.19+esm3
Available with Ubuntu Pro
Ubuntu 14.04
-
bind9
-
1:9.9.5.dfsg-3ubuntu0.19+esm7
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-5626-1: libbind9-160, liblwres160, libisccc160, bind9-libs, libdns-export1100, dnsutils, libisccfg160, bind9-dev, libirs-export160, libirs160, libisc169, libisccc-export160, bind9-doc, bind9-host, bind9utils, libisccfg-export160, bind9-utils, libisc-export169, libbind-export-dev, libbind-dev, libdns1100, bind9, bind9-dnsutils