Security readout for executives and security teams
CVE-2020-8617 is a denial-of-service flaw in ISC BIND. A crafted DNS message can make the named service exit when TSIG validation reaches an inconsistent state. DNS outages can disrupt websites, applications, email routing, and internal name resolution. Exposure is broad for organizations running affected BIND 9 versions, including servers not intentionally using TSIG, because BIND commonly configures a local session key by default. Treat as a high-priority infrastructure reliability issue. It is not described as data theft or remote code execution, but DNS service loss can cause visible business disruption. Mitigation focus: Identify all internet-facing and internal BIND 9 servers.; Apply ISC or operating-system vendor BIND security updates.; Prioritize DNS servers supporting production, identity, email, and network access..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2020-8617 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.isc.org/docs/cve-2020-8617CVE reference · x_refsource_CONFIRM
- DSA-4689CVE reference · vendor-advisory, x_refsource_DEBIAN
- https://security.netapp.com/advisory/ntap-20200522-0002/CVE reference · x_refsource_CONFIRM
- USN-4365-2CVE reference · vendor-advisory, x_refsource_UBUNTU
- USN-4365-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- [debian-lts-announce] 20200530 [SECURITY] [DLA 2227-1] bind9 security updateCVE reference · mailing-list, x_refsource_MLIST
- FEDORA-2020-2d89cbcfd9CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-f9dcd4e9d5CVE reference · vendor-advisory, x_refsource_FEDORA
Products and packages named in the record
CWE details
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