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Exploited vulnerability · CISA KEV

Is CVE-2018-20250 exploited? Yes: in CISA KEV since 15 Feb 2022

Gociux · RARLAB WinRAR · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2018-20250, WinRAR Absolute Path Traversal Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 15 Feb 2022, 1106 days after it was published. It is known to be used in ransomware campaigns. It affects RARLAB WinRAR. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 15 Feb 2022
ransomwareKnownused in campaigns
EPSStop 1%among the most likely CVEs to be exploited
severity7.8CVSS 3.1 · high
US federal due15 Aug 2022BOD 22-01 deadline

What it is

WinRAR Absolute Path Traversal vulnerability leads to Remote Code Execution

VendorRARLAB (5 exploited CVEs in KEV)
ProductWinRAR
VulnerabilityWinRAR Absolute Path Traversal Vulnerability
WeaknessCWE-36
Published5 Feb 2019
Added to KEV15 Feb 2022
Reported by (CNA)checkpoint

What to do

  1. Check whether you run it. Look for WinRAR in your asset inventory, including appliances and cloud images. Stack check lists every exploited RARLAB 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 Feb 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for RARLAB.

Other exploited CVEs in WinRAR

References

Questions

Is CVE-2018-20250 being exploited?

Yes. CISA added CVE-2018-20250 to the Known Exploited Vulnerabilities catalog on 15 Feb 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2018-20250 used in ransomware attacks?

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

How do I fix CVE-2018-20250?

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

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