Input Validation Flaw in tac_plus by Facebook
CVE-2023-45239

9.8CRITICAL

Key Information:

Vendor

Meta

Status
Tac Plus
Vendor
CVE Published:
6 October 2023

What is CVE-2023-45239?

An input validation flaw in tac_plus prior to commit 4fdf178 permits attackers to exploit commands through controlled input parameters, specifically the username, rem-addr, or NAC address. When pre or post-auth commands are activated, this vulnerability allows an attacker to inject shell commands, potentially leading to remote code execution on the tac_plus server. Organizations using affected versions should take immediate steps to update to secure versions to mitigate this risk.

Affected Version(s)

tac_plus 0

References

https://github.com/facebook/tac_plus/pull/41
x_refsource_MISC
https://github.com/facebook/tac_plus/security/advisories/...
x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/package-ann...

EPSS Score

35% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.