CVE-2019-6599 — In BIG-IP 11

In BIG-IP 11.6.1-11.6.3.2 or 11.5.1-11.5.8, or Enterprise Manager 3.1.1, improper escaping of values in an undisclosed page of the configuration utility may result with an improper handling on the JSON response when it is injected by a malicious script via a remote cross-site scr

01What is this vulnerability?

In BIG-IP 11.6.1-11.6.3.2 or 11.5.1-11.5.8, or Enterprise Manager 3.1.1, improper escaping of values in an undisclosed page of the configuration utility may result with an improper handling on the JSON response when it is injected by a malicious script via a remote cross-site scripting (XSS) attack.

02Affected products

Vendor	Product	Versions
F5 Networks, Inc.	BIG	IP APM; Enterprise Manager — 11.6.1-11.6.3.2, 11.5.1-11.5.8, EM 3.1.1

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: 2019-03-13T22:00:00.000Z
• Last modified: 2024-09-16T20:27:53.623Z

09References

• support.f5.com — https://support.f5.com/csp/article/K46401178
• www.securityfocus.com — http://www.securityfocus.com/bid/107420