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Exploited vulnerability · CISA KEV

Is CVE-2006-1547 exploited? Yes: in CISA KEV since 21 Jan 2022

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

Yes. CVE-2006-1547, Apache Struts 1 ActionForm Denial-of-Service Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 21 Jan 2022, 5776 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 · 21 Jan 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity7.5CVSS 3.1 · high
US federal due21 Jul 2022BOD 22-01 deadline

What it is

ActionForm in Apache Struts versions before 1.2.9 with BeanUtils 1.7 contains a vulnerability that allows for denial-of-service (DoS).

VendorApache (41 exploited CVEs in KEV)
ProductStruts 1
VulnerabilityApache Struts 1 ActionForm Denial-of-Service Vulnerability
Weaknessnot specified
Published30 Mar 2006
Added to KEV21 Jan 2022
Reported by (CNA)redhat

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 30 Mar 2006.
  4. Get told next time. Email alerts when CISA adds a CVE for Apache.

Other exploited CVEs in Struts 1

References

Questions

Is CVE-2006-1547 being exploited?

Yes. CISA added CVE-2006-1547 to the Known Exploited Vulnerabilities catalog on 21 Jan 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2006-1547 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-2006-1547?

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 January 2022 · Apache scorecard · act-now radar.

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