- Vulnerabilities 90,671
ISC BIND DoS Vulnerability (Aug 2021) - Linux
Published: 2021-09-17 10:31:32
CVSS Base Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
Detection Type:
Remote Banner Unreliable
Solution Type:
Vendor Patch
Summary:
ISC BIND is prone to a denial of service (DoS) vulnerability.
Detection Method:
Checks if a vulnerable version is present on the target host.
Technical Details:
named failed to check the opcode of responses when performing
zone refreshes, stub zone updates, and UPDATE forwarding. This could lead to an assertion failure
under certain conditions and has been addressed by rejecting responses whose opcode does not match
the expected value.
Affected Versions:
BIND version prior to 9.11.35, 9.16.x prior 9.16.20 and 9.17.x
prior to 9.17.17.
Recommendations:
Update to version 9.11.35, 9.16.20, 9.17.17 or later.
https://downloads.isc.org/isc/bind9/9.17.17/doc/arm/html/notes.html#notes-for-bind-9-17-17
https://downloads.isc.org/isc/bind9/9.16.20/doc/arm/html/notes.html#notes-for-bind-9-16-20
https://downloads.isc.org/isc/bind9/9.11.35/doc/arm/notes.html#relnotes-9.11.35
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