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CVE PROGRAM SOURCE RECORD8.1 High

CVE-2020-8625

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

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Status
Published
Published
Updated
Assigning organization
isc

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

ISC BIND9

  • Open Source Branches 9.5 though 9.11 9.5.0 through versions before 9.11.28affected
  • Open Source Branches 9.12 though 9.16 9.12.0 through versions before 9.16.12affected
  • Supported Preview Branch 9.11-S 9.11.3-S1 through versions before 9.11.28-S1affected
  • Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.12-S1affected
  • Development Branch 9.17 9.17.0 through versions before 9.17.2affected

References