Advisory Details

June 29th, 2022

ZyXel AP Configurator Incorrect Permission Assignment Local Privilege Escalation Vulnerability

ZDI-22-879
ZDI-CAN-14791

CVE ID CVE-2022-0556
CVSS SCORE 7.3, AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS ZyXel
AFFECTED PRODUCTS AP Configurator
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of ZyXel AP Configurator. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the installer. The issue results from incorrect permissions set on a directory. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of an Administrator.

ADDITIONAL DETAILS ZyXel has issued an update to correct this vulnerability. More details can be found at:
https://www.zyxel.com/support/Zyxel-security-advisory-for-local-privilege-escalation-vulnerability-of-AP-Configurator.shtml
DISCLOSURE TIMELINE
  • 2022-01-07 - Vulnerability reported to vendor
  • 2022-06-29 - Coordinated public release of advisory
CREDIT Anonymous
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