Vulnerability · Published May 22, 2024 · Assigned by zdi

CVE-2023-51636Avira Prime Link Following Local Privilege Escalation Vulnerability

High 7.8

In plain English

A high-severity security flaw in Prime from Avira. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).

Severity (CVSS 3.0)7.8High

Exploit odds (30 days)1.0%top 38.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Avira Prime Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avira Prime. 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 Avira Spotlight 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. Was ZDI-CAN-21600.

Affected products (as reported)

Vendor	Product	Versions
Avira	Prime	1.1.94.4

Weakness: CWE-59 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

ZDI-24-469 x_research-advisory