PT-2021-3999 · Confd · Confd
Published
2021-08-04
·
Updated
2022-07-15
·
CVE-2021-1572
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
ConfD (affected versions not specified)
Description
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.
Recommendations
Software updates that address this vulnerability have been released.
As a temporary workaround, consider disabling the ConfD built-in SSH server for CLI until a patch is available.
Restrict access to the SFTP user service to minimize the risk of exploitation.
Avoid using the SFTP interface until the issue is resolved.
Fix
Improper Privilege Management
Incorrect Privilege Assignment
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Related Identifiers
Affected Products
Confd