Vulnerability identifier: #VU81673
Vulnerability risk: High
CVSSv4.0: 8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Tacacs
Server applications /
Directory software, identity management
Vendor: www.shrubbery.net
Description
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to insufficient validation of username, NAS_name, and NAC_address fields in programs.c. A remote attacker can send specially crafted input to the daemon and potentially bypass authentication.
Mitigation
The vulnerability is fixed in the git repository of Tacacs+ Facebook fork.
Vulnerable software versions
Tacacs: F3.0.13 - 2.2
External links
https://bugzilla.redhat.com/show_bug.cgi?id=2242402
https://github.com/facebook/tac_plus/commit/68ba2a19472da0a3de28c41b7a2e222438dca359
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.