CVE-2020-8621
Attempting QNAME minimization after forwarding can lead to an assertion failure in resolver.c
- State
- Published
- Severity
- 7.5 High
- Published
- Aug 21, 2020
- Updated
- Sep 16, 2024
- Reserved
- Feb 5, 2020
Description
In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | isc |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
BIND9ISC |
|
References
- https://kb.isc.org/docs/cve-2020-8621
- https://security.netapp.com/advisory/ntap-20200827-0003/
- USN-4468-1vendor-advisory
- GLSA-202008-19vendor-advisory
- https://www.synology.com/security/advisory/Synology_SA_20_19
- openSUSE-SU-2020:1699vendor-advisory
- openSUSE-SU-2020:1701vendor-advisory
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