CVE-2023-46713 — An improper output neutralization for logs in Fortinet FortiWeb 6

An improper output neutralization for logs in Fortinet FortiWeb 6.2.0 - 6.2.8, 6.3.0 - 6.3.23, 7.0.0 - 7.0.9, 7.2.0 - 7.2.5 and 7.4.0 may allow an attacker to forge traffic logs via a crafted URL of the web application.

01What is this vulnerability?

An improper output neutralization for logs in Fortinet FortiWeb 6.2.0 - 6.2.8, 6.3.0 - 6.3.23, 7.0.0 - 7.0.9, 7.2.0 - 7.2.5 and 7.4.0 may allow an attacker to forge traffic logs via a crafted URL of the web application.

02Affected products

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-12-13T06:41:18.704Z
• Last modified: 2024-08-02T20:53:21.140Z

09References

• fortiguard.com — https://fortiguard.com/psirt/FG-IR-23-256