Buffer Overflow Affecting bind9 package, versions <1:9.16.12-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
18.73% (97th percentile)

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  • Snyk IDSNYK-DEBIAN11-BIND9-1076529
  • published18 Feb 2021
  • disclosed17 Feb 2021

Introduced: 17 Feb 2021

CVE-2020-8625  (opens in a new tab)
CWE-120  (opens in a new tab)

How to fix?

Upgrade Debian:11 bind9 to version 1:9.16.12-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind9 package and not the bind9 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. The most likely outcome of a successful exploitation of the vulnerability is a crash of the named process. However, remote code execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch

CVSS Scores

version 3.1