Advisory Details

February 11th, 2020

Symantec Endpoint Protection AvHostPlugin Missing Authentication Arbitrary File Move Vulnerability

ZDI-20-228
ZDI-CAN-9397

CVE ID CVE-2020-5825
CVSS SCORE 7.1, (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H)
AFFECTED VENDORS Symantec
AFFECTED PRODUCTS Endpoint Protection
VULNERABILITY DETAILS

This vulnerability allows local attackers to move arbitrary files on affected installations of Symantec Endpoint Protection. 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 AvHostPlugin.dll module. By invoking a method of a COM class, an attacker can move arbitrary files. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. An attacker can also leverage this in conjunction with other vulnerabilities to escalate privileges and execute code in the context of SYSTEM.

ADDITIONAL DETAILS Symantec has issued an update to correct this vulnerability. More details can be found at:
https://support.symantec.com/us/en/article.SYMSA1505.html
DISCLOSURE TIMELINE
  • 2019-10-29 - Vulnerability reported to vendor
  • 2020-02-11 - Coordinated public release of advisory
CREDIT Z0mb1E
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