Products

Shrubbery tac_plus

• 2.x

• 3.x

• 4.x through F4.0.4.28

Source

cve@mitre.org

Published : May 16, 2024, 4:15 p.m.
Last Modified : May 16, 2024, 4:15 p.m.

Description

Shrubbery tac_plus 2.x, 3.x. and 4.x through F4.0.4.28 allows unauthenticated Remote Command Execution. The product allows users to configure authorization checks as shell commands through the tac_plus.cfg configuration file. These are executed when a client sends an authorization request with a username that has pre-authorization directives configured. However, it is possible to inject additional commands into these checks because strings from TACACS+ packets are used as command-line arguments. If the installation lacks a a pre-shared secret (there is no pre-shared secret by default), then the injection can be triggered without authentication. (The attacker needs to know a username configured to use a pre-authorization command.) NOTE: this is related to CVE-2023-45239 but the issue is in the original Shrubbery product, not Meta's fork.

References

URL	Source
https://github.com/takeshixx/tac_plus-pre-auth-rce	cve@mitre.org