Apache Struts 1 Improper Input Validation Vulnerability (CVE-2017-9791)
Severity: critical · Patch status: patched · Since 2022-02-10 · CVE-2017-9791
The Struts 1 plugin in Apache Struts might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage. CISA added CVE-2017-9791 to its Known Exploited Vulnerabilities catalog on Feb 10, 2022, which means attackers are exploiting it in the wild.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Aug 10, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
