CVE-2020-8625
A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack
02 Description
A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 64.16% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 99.1% of scored records. A rank, not a probability.
- NVD base score
- 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-02-17 22:40Z5 YR AGO
- Last updated
- 2024-09-16 22:40Z2 YR AGO
- Reserved
- 2020-02-05
- Assigning CNA
- isc
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.1
- Document digest
- 8685179025f611c66b4e93263ab85d956d104b2ef4f98223ecce5cc1e466755c
05 Affected products
06 References
- kb.isc.orghttps://kb.isc.org/v1/docs/cve-2020-8625
- www.debian.orgDSA-4857https://www.debian.org/security/2021/dsa-4857
- www.openwall.com[oss-security] 20210218 BIND Operational Notification: Enabling the new BIND option "stale-answer-client-timeout" can result in unexpected server terminationhttp://www.openwall.com/lists/oss-security/2021/02/19/1
- lists.debian.org[debian-lts-announce] 20210219 [SECURITY] [DLA 2568-1] bind9 security updatehttps://lists.debian.org/debian-lts-announce/2021/02/msg00029.html
- www.openwall.com[oss-security] 20210220 BIND Operational Notification: Zone journal (.jnl) file incompatibility,after upgrading to BIND 9.16.12 and 9.17http://www.openwall.com/lists/oss-security/2021/02/20/2
- www.zerodayinitiative.comhttps://www.zerodayinitiative.com/advisories/ZDI-21-195/
- lists.fedoraproject.orgFEDORA-2021-0595625865https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX/
- lists.fedoraproject.orgFEDORA-2021-28f97e232dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST/
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20210319-0001/
- lists.fedoraproject.orgFEDORA-2021-8b4744f152https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
07 Remediation
Upgrade to the patched release most closely related to your current version of BIND: BIND 9.11.28 BIND 9.16.12 BIND Supported Preview Edition is a special feature-preview branch of BIND provided to eligible ISC support customers. BIND 9.11.28-S1 BIND 9.16.12-S1 Acknowledgments: ISC would like to thank an anonymous party, working in conjunction with Trend Micro Zero Day Initiative, for reporting this issue to us.
08 Fixed in
Arch Linux
- bind Fixed in 9.16.12-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- bind9 Fixed in 1:9.16.12-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- bind9 Fixed in 1:9.16.12-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- bind9 Fixed in 1:9.16.12-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- bind9 Fixed in 1:9.10.3.dfsg.P4-8ubuntu1.18
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- bind9 Fixed in 1:9.11.3+dfsg-1ubuntu1.14
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- bind9 Fixed in 1:9.16.1-0ubuntu2.6
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- bind9 Fixed in 1:9.9.5.dfsg-3ubuntu0.19+esm4Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.