PT-2023-6746 · Fortinet · Fortiweb

Published 2023-02-16 · Updated 2023-02-28 · CVE-2023-23781

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions FortiWeb versions 7.0.1 and below FortiWeb versions 6.4 and all versions below 6.3.19

Description The issue is caused by a stack-based buffer overflow. It may allow a remote attacker to execute arbitrary code using specially crafted XML files. The vulnerability can be exploited by an authenticated attacker in the SAML server configuration.

Recommendations For FortiWeb versions 7.0.1 and below, update to a version above 7.0.1 to resolve the issue. For FortiWeb versions 6.4 and all versions below 6.3.19, update to a version above 6.3.19 to resolve the issue. As a temporary workaround, consider restricting access to the SAML server configuration to minimize the risk of exploitation. Avoid using specifically crafted XML files in the affected configuration until the issue is resolved.

Fix

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

BDU:2023-07533

CVE-2023-23781

Affected Products

Fortiweb

References · 5

• https://fortiguard.com/psirt/FG-IR-22-151 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-23781 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-23781 · Security Note
• https://bdu.fstec.ru/vul/2023-07533 · Security Note
• https://t.me/cvenotify/44970 · Telegram Post