PT-2021-23666 · Barracuda · Barracuda Network Access Client

Ronnie Salomonsen · Published 2021-12-01 · Updated 2021-12-03 · CVE-2021-42711

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 Barracuda Network Access Client versions prior to 5.2.2

Description The issue arises when the Barracuda Network Access Client creates a temporary file in a directory with insecure permissions. This file is executed with SYSTEM privileges when an unprivileged user performs a repair operation, potentially leading to exploitation.

Recommendations For versions prior to 5.2.2, update to version 5.2.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the directory where the temporary file is created to minimize the risk of exploitation.

Fix

Incorrect Default Permissions

Weakness Enumeration

CWE-276

Related Identifiers

CVE-2021-42711

Affected Products

Barracuda Network Access Client

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-42711 · Security Note
• https://osv.dev/vulnerability/CVE-2021-42711 · Vendor Advisory
• https://github.com/mandiant/Vulnerability-Disclosures/blob/master/MNDT-2021-0010/MNDT-2021-0010.md · Note
• https://t.me/cvenotify/24071 · Telegram Post