Allele Security Alert
An error in the nxdomain redirect feature can cause BIND to exit with an INSIST assertion failure in query.c
Internet Systems Consortium (ISC)
BIND 9.12.0 to 9.12.4
All releases in the 9.13 development branch
Proof of concept
A programming error in the nxdomain-redirect feature can cause an assertion failure in query.c if the alternate namespace used by nxdomain-redirect is a descendant of a zone that is served locally.
The most likely scenario where this might occur is if the server, in addition to performing NXDOMAIN redirection for recursive clients, is also serving a local copy of the root zone or using mirroring to provide the root zone, although other configurations are also possible.
CVE-2019-6467: An error in the nxdomain redirect feature can cause BIND to exit with an INSIST assertion failure in query.c
If there is any error in this alert or you wish a comprehensive analysis, let us know.
Last modified: April 27, 2019