CVE-2020-8625
BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 64.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 64.16% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- isc/bind · debian/debian linux · fedoraproject/fedora · siemens/sinec infrastructure network services · netapp/cloud backup · netapp/a250 firmware · netapp/500f firmware
- Source
- security-officer@isc.org
EPSS 64.2% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2021/02/19/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/20/2Mailing List, Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
- https://kb.isc.org/v1/docs/cve-2020-8625Mitigation, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00029.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX/
- https://security.netapp.com/advisory/ntap-20210319-0001/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4857Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-195/Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2021/02/19/1Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/20/2Mailing List, Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
- https://kb.isc.org/v1/docs/cve-2020-8625Mitigation, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00029.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX/
- https://security.netapp.com/advisory/ntap-20210319-0001/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4857Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-195/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.