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Advisories

OpenEMR before 8.5.0 Denial of Service via ZIP Upload Decompression

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Severity
medium
Date
Affecting

  • openemr >= 0, < 8.5.0

CWE
  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Credit
farisv
Description
OpenEMR before 8.5.0 contains a denial of service vulnerability in four ZIP upload paths that read uncompressed entries into memory without size or ratio checks. Authenticated billing or Carecoordination users can upload highly compressed ZIP archives to exhaust PHP memory and worker pools, making OpenEMR unavailable.

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