Vulnerability CVE-2022-3924: Information
Description
This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-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 | 9.16.37-alt1 | 9.18.27-alt1 | ALT-PU-2023-1130-1 | 314153 | Fixed |
| bind | sisyphus_e2k | 9.16.37-alt1 | 9.18.27-alt1 | ALT-PU-2023-2364-1 | - | Fixed |
| bind | sisyphus_riscv64 | 9.16.37-alt1 | 9.18.27-alt1 | ALT-PU-2023-2358-1 | - | Fixed |
| bind | p10 | 9.16.37-alt1 | 9.16.48-alt1 | ALT-PU-2023-1185-1 | 314185 | Fixed |
| bind | p10_e2k | 9.16.37-alt1 | 9.16.48-alt1 | ALT-PU-2023-2443-1 | - | Fixed |
| bind | c10f1 | 9.16.37-alt1 | 9.16.48-alt0.c10f2.1 | ALT-PU-2023-1185-1 | 314185 | Fixed |
| bind | p11 | 9.16.37-alt1 | 9.18.27-alt1 | ALT-PU-2023-1130-1 | 314153 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://kb.isc.org/docs/cve-2022-3924 |
|