CVE-2017-5638

Critical · CVSS 9.8EPSS 100.0%CISA KEVCWE-755

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The Jakarta Multipart parser in Apache Struts 2 2.3.x before 2.3.32 and 2.5.x before 2.5.10.1 has incorrect exception handling and error-message generation during file-upload attempts, which allows remote attackers to execute arbitrary commands via a crafted Content-Type, Content-Disposition, or Content-Length HTTP header, as exploited in the wild in March 2017 with a Content-Type header containing a #cmd= string.

References

NVD MITRE CVE.org CISA KEV

Published Mar 11, 2017

Community ground truth

Community verdict

3 verdicts

Not a real issue

Includes TruePositive's curated baseline from public sources — community verdicts accrue on top.

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Community real-world severity: Critical (Critical 3) — CVSS base score 9.8

In line with its CVSS base score.

Field notes & remediation

Verdicts are the quick signal — notes are the evidence and fixes behind them.

0
Field note · Mara OkonkwoCurated
Unauthenticated RCE via a crafted Content-Type header — OGNL evaluation in the Jakarta Multipart parser. This is the Equifax CVE. Mass-scanned within hours of disclosure.
0
Remediation · Diego RamírezCurated
Upgrade Struts to 2.3.32 / 2.5.10.1 or later. If you can't patch immediately, switch off the Jakarta Multipart parser or put a WAF rule on malformed Content-Type, but treat that as a stopgap.