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Exploited vulnerability · CISA KEV

Is CVE-2023-38203 exploited? Yes: in CISA KEV since 8 Jan 2024

Gociux · Adobe ColdFusion · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-38203, Adobe ColdFusion Deserialization of Untrusted Data Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 8 Jan 2024, 172 days after it was published. It is known to be used in ransomware campaigns. It affects Adobe ColdFusion. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 8 Jan 2024
ransomwareKnownused in campaigns
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due29 Jan 2024BOD 22-01 deadline

What it is

Adobe ColdFusion contains a deserialization of untrusted data vulnerability that allows for code execution.

VendorAdobe (83 exploited CVEs in KEV)
ProductColdFusion
VulnerabilityAdobe ColdFusion Deserialization of Untrusted Data Vulnerability
WeaknessCWE-502
Published20 Jul 2023
Added to KEV8 Jan 2024
Reported by (CNA)adobe

What to do

  1. Check whether you run it. Look for ColdFusion in your asset inventory, including appliances and cloud images. Stack check lists every exploited Adobe CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
  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 20 Jul 2023.
  4. Get told next time. Email alerts when CISA adds a CVE for Adobe.

Other exploited CVEs in ColdFusion

References

Questions

Is CVE-2023-38203 being exploited?

Yes. CISA added CVE-2023-38203 to the Known Exploited Vulnerabilities catalog on 8 Jan 2024, which means there is reliable evidence of exploitation in the wild.

Is CVE-2023-38203 used in ransomware attacks?

Yes, CISA lists it as known to be used in ransomware campaigns.

How do I fix CVE-2023-38203?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check Adobe's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected ColdFusion 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 2024 · Adobe scorecard · act-now radar.

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