Vulnerability Monitor

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CVE-2021-1572


A vulnerability in ConfD could allow an authenticated, local attacker to execute arbitrary commands at the level of the account under which ConfD is running, which is commonly root. To exploit this vulnerability, an attacker must have a valid account on an affected device. The vulnerability exists because the affected software incorrectly runs the SFTP user service at the privilege level of the account that was running when the ConfD built-in Secure Shell (SSH) server for CLI was enabled. If the ConfD built-in SSH server was not enabled, the device is not affected by this vulnerability. An attacker with low-level privileges could exploit this vulnerability by authenticating to an affected device and issuing a series of commands at the SFTP interface. A successful exploit could allow the attacker to elevate privileges to the level of the account under which ConfD is running, which is commonly root. Note: Any user who can authenticate to the built-in SSH server may exploit this vulnerability. By default, all ConfD users have this access if the server is enabled. Software updates that address this vulnerability have been released.


Published

2021-08-04T18:15:08.470

Last Modified

2024-11-21T05:44:39.023

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

  • Access Vector: LOCAL
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

3.4

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-266
  • Type: Primary
    CWE-269

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco confd ≤ 7.4.3 Yes
Application cisco confd ≤ 7.5.2 Yes
Application cisco network_services_orchestrator ≤ 5.4.3.1 Yes
Application cisco network_services_orchestrator ≤ 5.5.2.2 Yes

References