SARA / Free Tools / KEV / CVE-2019-11043

CVE-2019-11043 on CISA KEV

In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code exec

CISA KEV — Actively Exploited

PHP FastCGI Process Manager (FPM) Buffer Overflow Vulnerability

Vendor / Product
— / PHP / FastCGI Process Manager (FPM)
Added to KEV
2022-03-25
BOD 22-01 due
2022-04-15
Ransomware use
Known
CVSS / EPSS
8.7 HIGH · EPSS 94.05%

01What CISA says about this vulnerability

In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus opening the possibility of remote code execution.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
PHPPHP7.1.x, 7.2.x, 7.3.x

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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