← gociux.comall exploited CVEs

Exploited vulnerability · CISA KEV

Is CVE-2017-9791 exploited? Yes: in CISA KEV since 10 Feb 2022

Gociux · Apache Struts 1 · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2017-9791, Apache Struts 1 Improper Input Validation Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 10 Feb 2022, 1676 days after it was published. It affects Apache Struts 1. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 10 Feb 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due10 Aug 2022BOD 22-01 deadline

What it is

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.

VendorApache (41 exploited CVEs in KEV)
ProductStruts 1
VulnerabilityApache Struts 1 Improper Input Validation Vulnerability
WeaknessCWE-20
Published10 Jul 2017
Added to KEV10 Feb 2022
Reported by (CNA)apache

What to do

  1. Check whether you run it. Look for Struts 1 in your asset inventory, including appliances and cloud images. Stack check lists every exploited Apache 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 10 Jul 2017.
  4. Get told next time. Email alerts when CISA adds a CVE for Apache.

Other exploited CVEs in Struts 1

References

Questions

Is CVE-2017-9791 being exploited?

Yes. CISA added CVE-2017-9791 to the Known Exploited Vulnerabilities catalog on 10 Feb 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2017-9791 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2017-9791?

Apply updates per vendor instructions. Check Apache's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Struts 1 and watch it for signs of compromise.

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 February 2022 · Apache scorecard · act-now radar.

Running Apache in a regulated environment?

We check exposure across your estate, patch or mitigate with your team, and set up detection for what attackers do after exploiting it.

Get in touch →