PT-2021-23741 · Fortinet · Fortiweb

Published 2021-12-08 · Updated 2021-12-09 · CVE-2021-43064

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Fortinet FortiWeb versions 6.4.1 through 6.4.0 Fortinet FortiWeb version 6.3.15 and below Fortinet FortiWeb version 6.2.6 and below

Description The issue allows for a url redirection to an untrusted site, also known as an 'open redirect', enabling an attacker to use the device as a proxy to reach external or protected hosts via redirection handlers.

Recommendations For Fortinet FortiWeb versions 6.4.1 and 6.4.0, update to a version that fixes the issue. For Fortinet FortiWeb version 6.3.15 and below, update to a version that fixes the issue. For Fortinet FortiWeb version 6.2.6 and below, update to a version that fixes the issue. As a temporary workaround, consider restricting access to redirection handlers to minimize the risk of exploitation.

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2021-43064

Affected Products

Fortiweb

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-43064 · Security Note
• https://fortiguard.com/advisory/FG-IR-21-168 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-43064 · Vendor Advisory
• https://t.me/cibsecurity/33576 · Telegram Post