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The read and write access to a TSIG key file used by a BIND 9.x server must be restricted to only the account that runs the name server software.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-272375BIND-9X-001180SV-272375r1123858_ruleCCI-000186medium
Description
Weak permissions of a TSIG key file could allow an adversary to modify the file, thus defeating the security objective.
STIGDate
BIND 9.x Security Technical Implementation Guide2026-02-25

Related Frameworks

1 mapping across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-10.2PKI-Based Authentication
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (55) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-12Session Termination
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00
AC-3(4)Discretionary Access Control
1.00

+45 more (top 10 by confidence shown)

CCI1 mapping
CCI-000186
1.00

Details

Check Text (C-272375r1123858_chk)

Verify permissions assigned to the TSIG keys enforce read-write access to the key owner and deny access to group or system users. With the assistance of the DNS administrator, determine the location of the TSIG keys used by the BIND 9.x implementation: # ls -al <TSIG_Key_Location> -rw-r-----. 1 root named 76 May 10 20:35 tsig-example.key If the key files are more permissive than 640, this is a finding.

Fix Text (F-76332r1123857_fix)

Change the permissions of the TSIG key files: # chmod 640 <TSIG_key_file>