USN-6183-2: Bind vulnerability
18 July 2023
Bind could be made to crash if it received specially crafted network traffic.
Releases
Packages
- bind9 - Internet Domain Name Server
Details
USN-6183-1 fixed vulnerabilities in Bind. This update provides the
corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04
LTS.
Original advisory details:
Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered
that Bind incorrectly handled the cache size limit. A remote attacker could
possibly use this issue to consume memory, leading to a denial of service.
(CVE-2023-2828)
It was discovered that Bind incorrectly handled the recursive-clients
quota. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. This issue only affected Ubuntu
22.04 LTS, Ubuntu 22.10, and Ubuntu 23.04. (CVE-2023-2911)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04
-
bind9
-
1:9.11.3+dfsg-1ubuntu1.19+esm1
Available with Ubuntu Pro
Ubuntu 16.04
-
bind9
-
1:9.10.3.dfsg.P4-8ubuntu1.19+esm6
Available with Ubuntu Pro
Ubuntu 14.04
-
bind9
-
1:9.9.5.dfsg-3ubuntu0.19+esm10
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-6183-1: bind9utils, bind9-dnsutils, bind9-host, dnsutils, bind9-dev, bind9, bind9-utils, bind9-doc, bind9-libs