USN-5332-1: Bind vulnerabilities
17 March 2022
Several security issues were fixed in Bind.
Releases
Packages
- bind9 - Internet Domain Name Server
Details
Xiang Li, Baojun Liu, Chaoyi Lu, and Changgen Zou discovered that Bind
incorrectly handled certain bogus NS records when using forwarders. A
remote attacker could possibly use this issue to manipulate cache results.
(CVE-2021-25220)
It was discovered that Bind incorrectly handled certain crafted TCP
streams. A remote attacker could possibly use this issue to cause Bind to
consume resources, leading to a denial of service. This issue only affected
Ubuntu 21.10. (CVE-2022-0396)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10
Ubuntu 20.04
Ubuntu 18.04
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-5332-2: libisccc-export140, libisccfg140, bind9-host, liblwres90, libdns162, liblwres141, libbind-dev, lwresd, libisc160, bind9-doc, libisccc90, libisc-export160, libbind9-90, host, libisc95, libisccfg-export140, libirs141, bind9utils, libdns100, dnsutils, libdns-export162, libisccc-export140-udeb, bind9, libirs-export141, libisccc140, libisccfg90, libbind-export-dev, libbind9-140