Security Alert (A21-05-01): Vulnerability in ISC BIND


 

Published on: 03 May 2021

Description:

ISC has released a security update to fix a vulnerability in BIND. This vulnerability only affects servers configured to use GSS-TSIG. The details of the security update can be found at:

https://kb.isc.org/v1/docs/cve-2021-25216

 

Affected Systems:

  • BIND 9.5.0 to 9.11.29
  • BIND 9.12.0 to 9.16.13
  • BIND 9.11.3-S1 to 9.11.29-S1
  • BIND 9.16.8-S1 to 9.16.13-S1
  • BIND 9.17.0 to 9.17.1

 

Impact:

Successful exploitation of the vulnerability could lead to buffer overflow, system crash or potentially remote code execution on an affected system.

 

Recommendation:

Internet Systems Consortium (ISC) has released the following patches to solve the problems:

  • BIND 9.11.31
  • BIND 9.16.15
  • BIND 9.11.31-S1
  • BIND 9.16.15-S1

The patches can be downloaded at the following URLs:
https://www.isc.org/download/

Administrators of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.

 

More Information:

  • https://kb.isc.org/v1/docs/cve-2021-25216
  • https://downloads.isc.org/isc/bind9/9.11.31/RELEASE-NOTES-bind-9.11.31.html
  • https://downloads.isc.org/isc/bind9/9.16.15/RELEASE-NOTES-bind-9.16.15.html
  • https://downloads.isc.org/isc/bind9/9.17.12/RELEASE-NOTES-bind-9.17.12.html
  • https://www.hkcert.org/security-bulletin/isc-bind-multiple-vulnerabilities_20210429
  • https://us-cert.cisa.gov/ncas/current-activity/2021/04/29/isc-releases-security-advisory-bind
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25216


Tag: BIND , ISC
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