PT-2022-22425 · Parallels · Parallels Access Agent

Reno Robert · Published 2022-07-01 · Updated 2022-07-28 · CVE-2022-34899

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base 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 Parallels Access Agent version 6.5.4 (39316)

Description This issue allows local attackers to escalate privileges on affected installations. An attacker must first obtain the ability to execute low-privileged code on the target host system in order to exploit this issue. The specific flaw exists within the Parallels service. By creating a symbolic link, an attacker can abuse the service to execute a file. An attacker can leverage this issue to escalate privileges and execute arbitrary code in the context of root.

Recommendations For Parallels Access Agent version 6.5.4 (39316), consider disabling the Parallels service until a patch is available to prevent exploitation. Restrict access to the service to minimize the risk of privilege escalation. Avoid using the service to execute files from untrusted sources until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2022-34899

ZDI-22-947

Affected Products

Parallels Access Agent

References · 5

• https://zerodayinitiative.com/advisories/ZDI-22-947 · Security Note
• https://osv.dev/vulnerability/CVE-2022-34899 · Vendor Advisory
• https://kb.parallels.com/en/129010 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-34899 · Security Note
• https://t.me/cibsecurity/46451 · Telegram Post