CVE-2020-8622
A truncated TSIG response can lead to an assertion failure
- State
- Published
- Severity
- 6.5 Medium
- Published
- Aug 21, 2020
- Updated
- Sep 16, 2024
- Reserved
- Feb 5, 2020
Description
In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/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-2020-8622
- FEDORA-2020-a02b7a0f21vendor-advisory
- USN-4468-1vendor-advisory
- USN-4468-2vendor-advisory
- DSA-4752vendor-advisory
- FEDORA-2020-14c194e5afvendor-advisory
- [debian-lts-announce] 20200829 [SECURITY] [DLA 2355-1] bind9 security updatemailing-list
- GLSA-202008-19vendor-advisory
- openSUSE-SU-2020:1699vendor-advisory
- openSUSE-SU-2020:1701vendor-advisory
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://security.netapp.com/advisory/ntap-20200827-0003/
- https://www.synology.com/security/advisory/Synology_SA_20_19
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