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High USN-4737-1 1 CVE

bind9 vulnerability

Published Feb 18, 2021 · Updated Apr 22, 2026

Ecosystem: Ubuntu

Summary

It was discovered that Bind incorrectly handled GSSAPI security policy
negotiation. A remote attacker could use this issue to cause Bind to crash,
resulting in a denial of service, or possibly execute arbitrary code. In
the default installation, attackers would be isolated by the Bind AppArmor
profile.

Fixed packages 3

ReleasePackageFixed in
Ubuntu · 16.04 LTS 16.04:LTS bind9 1:9.10.3.dfsg.P4-8ubuntu1.18
Ubuntu · 18.04 LTS 18.04:LTS bind9 1:9.11.3+dfsg-1ubuntu1.14
Ubuntu · 20.04 LTS 20.04:LTS bind9 1:9.16.1-0ubuntu2.6

Vulnerabilities 1

  • High 8.1
    CVE-2020-8625 EPSS 65%

    A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack

    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 explicit…

    ISC BIND9 bind9 bind9 Debian Ubuntu Alpine

References

  • report
    https://ubuntu.com/security/CVE-2020-8625