CVE-2023-48643

1976-01-0100:00:00

mitre

github.com

AI Score

7.7

Confidence

Low

EPSS

0.003

Percentile

71.4%

SSVC

Exploitation

poc

Automatable

yes

Technical Impact

total

JSON

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.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:shrubbery:tac_plus_2x:*:*:*:*:*:*:*:*"
    ],
    "vendor": "shrubbery",
    "product": "tac_plus_2x",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "versionType": "custom",
        "lessThanOrEqual": "f_4.0.4.28"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "cpes": [
      "cpe:2.3:a:shrubbery:tac_plus_3x:*:*:*:*:*:*:*:*"
    ],
    "vendor": "shrubbery",
    "product": "tac_plus_3x",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "versionType": "custom",
        "lessThanOrEqual": "f_4.0.4.28"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "cpes": [
      "cpe:2.3:a:shrubbery:tac_plus_4x:*:*:*:*:*:*:*:*"
    ],
    "vendor": "shrubbery",
    "product": "tac_plus_4x",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "versionType": "custom",
        "lessThanOrEqual": "f_4.0.4.28"
      }
    ],
    "defaultStatus": "unknown"
  }
]