Advisory Details

August 15th, 2023

ESET Smart Security Link Following Local Privilege Escalation Vulnerability

ZDI-23-1114
ZDI-CAN-20587

CVE ID CVE-2023-3160
CVSS SCORE 7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS ESET
AFFECTED PRODUCTS Smart Security
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of ESET Smart Security. 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 ekrn service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

ADDITIONAL DETAILS ESET has issued an update to correct this vulnerability. More details can be found at:
https://support.eset.com/en/ca8466-eset-customer-advisory-local-privilege-escalation-vulnerability-fixed-in-eset-security-products-for-windows
DISCLOSURE TIMELINE
  • 2023-04-28 - Vulnerability reported to vendor
  • 2023-08-15 - Coordinated public release of advisory
CREDIT Filip Dragovic (@filip_dragovic)
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