CVE-2020-8617
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
19/05/2020
Last modified:
07/11/2023
Description
Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.
Impact
Base Score 3.x
5.90
Severity 3.x
MEDIUM
Base Score 2.0
4.30
Severity 2.0
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* | 9.0.0 (including) | 9.11.18 (including) |
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* | 9.12.0 (including) | 9.12.4 (including) |
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* | 9.13.0 (including) | 9.13.7 (including) |
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* | 9.14.0 (including) | 9.14.11 (including) |
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* | 9.15.0 (including) | 9.15.6 (including) |
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* | 9.16.0 (including) | 9.16.2 (including) |
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* | 9.17.0 (including) | 9.17.1 (including) |
cpe:2.3:a:isc:bind:9.12.4:p1:*:*:*:*:*:* | ||
cpe:2.3:a:isc:bind:9.12.4:p2:*:*:*:*:*:* | ||
cpe:2.3:a:isc:bind:9.9.3:s1:*:*:supported_preview:*:*:* | ||
cpe:2.3:a:isc:bind:9.10.5:s1:*:*:supported_preview:*:*:* | ||
cpe:2.3:a:isc:bind:9.10.7:s1:*:*:supported_preview:*:*:* | ||
cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:* | ||
cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:* | ||
cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
- http://packetstormsecurity.com/files/157836/BIND-TSIG-Denial-Of-Service.html
- http://www.openwall.com/lists/oss-security/2020/05/19/4
- https://kb.isc.org/docs/cve-2020-8617
- https://lists.debian.org/debian-lts-announce/2020/05/msg00031.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKJXVBOKZ36ER3EUCR7VRB7WGHIIMPNJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOGCJS2XQ3SQNF4W6GLZ73LWZJ6ZZWZI/
- https://security.netapp.com/advisory/ntap-20200522-0002/
- https://usn.ubuntu.com/4365-1/
- https://usn.ubuntu.com/4365-2/
- https://www.debian.org/security/2020/dsa-4689