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CVE-2020-8625

HIGH
Published 2021-02-17T22:40:16.090944Z
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CVSS Score

V3.1
8.1
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.021
probability
of exploitation in the wild

There is a 2.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.832
Higher than 83.2% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Description

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

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

ISC

BIND9

Affected Versions:

Open Source Branches 9.5 though 9.11 9.5.0 through versions before 9.11.28 Open Source Branches 9.12 though 9.16 9.12.0 through versions before 9.16.12 Supported Preview Branch 9.11-S 9.11.3-S1 through versions before 9.11.28-S1 Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.12-S1 Development Branch 9.17 9.17.0 through versions before 9.17.2

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-mxh3-93ph-p9r2

Advisory Details

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 Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-8625
WEB https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
WEB https://kb.isc.org/v1/docs/cve-2020-8625
WEB https://lists.debian.org/debian-lts-announce/2021/02/msg00029.html
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX
WEB https://security.netapp.com/advisory/ntap-20210319-0001
WEB https://www.debian.org/security/2021/dsa-4857
WEB https://www.zerodayinitiative.com/advisories/ZDI-21-195
WEB http://www.openwall.com/lists/oss-security/2021/02/19/1
WEB http://www.openwall.com/lists/oss-security/2021/02/20/2

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: May 24, 2022

References

https://kb.isc.org/v1/docs/cve-2020-8625
https://www.debian.org/security/2021/dsa-4857
http://www.openwall.com/lists/oss-security/2021/02/19/1
https://lists.debian.org/debian-lts-announce/2021/02/msg00029.html
http://www.openwall.com/lists/oss-security/2021/02/20/2
https://www.zerodayinitiative.com/advisories/ZDI-21-195/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST/
https://security.netapp.com/advisory/ntap-20210319-0001/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Published: 2021-02-17T22:40:16.090944Z
Last Modified: 2024-09-16T22:40:02.277Z
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