Exploited vulnerability · CISA KEV

Is CVE-2019-11043 exploited? Yes: in CISA KEV since 25 Mar 2022

Gociux · PHP FastCGI Process Manager (FPM) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-11043, PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 25 Mar 2022, 879 days after it was published. It is known to be used in ransomware campaigns. It affects PHP FastCGI Process Manager (FPM). If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

In some versions of PHP in certain configurations of FPM setup, it is possible to cause FPM module to write past allocated buffers allowing the possibility of remote code execution.

What to do

1. Check whether you run it. Look for FastCGI Process Manager (FPM) in your asset inventory, including appliances and cloud images. Stack check lists every exploited PHP CVE at once.
2. Apply the fix. Apply updates per vendor instructions.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 28 Oct 2019.
4. Get told next time. Email alerts when CISA adds a CVE for PHP.

References

• nvd.nist.gov/vuln/detail/CVE-2019-11043

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in March 2022 · PHP scorecard · act-now radar.