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Red Hat: CVE-2020-8625: CVE-2020-8625 bind: Buffer overflow in the SPNEGO implementation affecting GSSAPI security policy negotiation (Multiple Advisories)

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Red Hat: CVE-2020-8625: CVE-2020-8625 bind: Buffer overflow in the SPNEGO implementation affecting GSSAPI security policy negotiation (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
02/17/2021
Created
03/04/2021
Added
03/03/2021
Modified
12/15/2023

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

Solution(s)

  • redhat-upgrade-bind
  • redhat-upgrade-bind-chroot
  • redhat-upgrade-bind-debuginfo
  • redhat-upgrade-bind-debugsource
  • redhat-upgrade-bind-devel
  • redhat-upgrade-bind-export-devel
  • redhat-upgrade-bind-export-libs
  • redhat-upgrade-bind-export-libs-debuginfo
  • redhat-upgrade-bind-libs
  • redhat-upgrade-bind-libs-debuginfo
  • redhat-upgrade-bind-libs-lite
  • redhat-upgrade-bind-libs-lite-debuginfo
  • redhat-upgrade-bind-license
  • redhat-upgrade-bind-lite-devel
  • redhat-upgrade-bind-pkcs11
  • redhat-upgrade-bind-pkcs11-debuginfo
  • redhat-upgrade-bind-pkcs11-devel
  • redhat-upgrade-bind-pkcs11-libs
  • redhat-upgrade-bind-pkcs11-libs-debuginfo
  • redhat-upgrade-bind-pkcs11-utils
  • redhat-upgrade-bind-pkcs11-utils-debuginfo
  • redhat-upgrade-bind-sdb
  • redhat-upgrade-bind-sdb-chroot
  • redhat-upgrade-bind-sdb-debuginfo
  • redhat-upgrade-bind-utils
  • redhat-upgrade-bind-utils-debuginfo
  • redhat-upgrade-python3-bind

References

  • DSA-4857
  • CVE-2020-8625
  • RHSA-2021:0669
  • RHSA-2021:0670
  • RHSA-2021:0671
  • RHSA-2021:0691
  • RHSA-2021:0727
  • RHSA-2021:0922
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