Summary
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)
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | bind9 | 1:9.9.5.dfsg-3ubuntu0.19+esm10 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | bind9 | 1:9.10.3.dfsg.P4-8ubuntu1.19+esm6 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | bind9 | 1:9.11.3+dfsg-1ubuntu1.19+esm1 |
Vulnerabilities 1
-
High 7.5
named's configured cache size limit can be significantly exceeded
Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size`…
References
-
report
https://ubuntu.com/security/CVE-2023-2828