Vulnerability CVE-2023-2828: Information
Description
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` statement in the configuration file; it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit. It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded. This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.
Severity: HIGH (7.5) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| bind | sisyphus | 9.16.42-alt1 | 9.18.27-alt1 | ALT-PU-2023-2044-1 | 323428 | Fixed |
| bind | sisyphus_e2k | 9.16.42-alt1 | 9.18.27-alt1 | ALT-PU-2023-3961-1 | - | Fixed |
| bind | sisyphus_riscv64 | 9.16.42-alt1 | 9.18.27-alt1 | ALT-PU-2023-4000-1 | - | Fixed |
| bind | p10 | 9.16.42-alt1 | 9.16.48-alt1 | ALT-PU-2023-2102-1 | 323491 | Fixed |
| bind | p10_e2k | 9.16.42-alt1 | 9.16.48-alt1 | ALT-PU-2023-4058-1 | - | Fixed |
| bind | c10f1 | 9.16.44-alt0.c10.1 | 9.16.48-alt0.c10f2.1 | ALT-PU-2024-1988-2 | 340105 | Fixed |
| bind | p11 | 9.16.42-alt1 | 9.18.27-alt1 | ALT-PU-2023-2044-1 | 323428 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://kb.isc.org/docs/cve-2023-2828 |
|
| http://www.openwall.com/lists/oss-security/2023/06/21/6 |
|
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/ |
|
| https://www.debian.org/security/2023/dsa-5439 |
|
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/ |
|
| https://security.netapp.com/advisory/ntap-20230703-0010/ |
|
| https://lists.debian.org/debian-lts-announce/2023/07/msg00021.html |
|