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Exploited vulnerability · CISA KEV

Is CVE-2016-3715 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · ImageMagick · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2016-3715, ImageMagick Arbitrary File Deletion Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 2008 days after it was published. It affects ImageMagick. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity5.5CVSS 3.1 · medium
US federal due3 May 2022BOD 22-01 deadline

What it is

ImageMagick contains an unspecified vulnerability that could allow users to delete files by using ImageMagick's 'ephemeral' pseudo protocol, which deletes files after reading.

VendorImageMagick (3 exploited CVEs in KEV)
ProductImageMagick
VulnerabilityImageMagick Arbitrary File Deletion Vulnerability
WeaknessCWE-284
Published5 May 2016
Added to KEV3 Nov 2021
Reported by (CNA)redhat

What to do

  1. Check whether you run it. Look for ImageMagick in your asset inventory, including appliances and cloud images. Stack check lists every exploited ImageMagick 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 5 May 2016.
  4. Get told next time. Email alerts when CISA adds a CVE for ImageMagick.

Other exploited CVEs in ImageMagick

References

Questions

Is CVE-2016-3715 being exploited?

Yes. CISA added CVE-2016-3715 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2016-3715 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-2016-3715?

Apply updates per vendor instructions. Check ImageMagick's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected ImageMagick 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 November 2021 · ImageMagick scorecard · act-now radar.

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