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All Projects → 1lann → log4shelldetect

1lann / log4shelldetect

Licence: Unlicense License
Rapidly scan filesystems for Java programs potentially vulnerable to Log4Shell (CVE-2021-44228) or "that Log4j JNDI exploit" by inspecting the class paths inside files

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log4jscannervulnerability-scannerslog4j2cve-2021-44228log4shellcve-2021-45046

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log4shelldetect

Scans a file or folder recursively for Java programs that may be vulnerable to:

  • CVE-2021-44228 (Log4Shell) (v2.0.x - v2.14.x)
  • CVE-2021-45046 (v2.15.x)
  • CVE-2021-45105 (v2.16.x)1

by inspecting the class paths inside files.

If you only want possibly vulnerable files to be printed rather than all files, run with -mode list.

Demo of log4shelldetect

Usage

Usage: log4shelldetect [options] <path>

Options:
  -include-zip
        include zip files in the scan
  -mode string
        the output mode, either "report" (every java archive pretty printed) or "list" (list of potentially vulnerable files) (default "report")

License

Code here is released to the public domain under unlicense.

With the exception of velocity-1.1.9.jar which is an example vulnerable .jar file part of Velocity which is licensed under GPLv3.

Footnotes

  1. 2.12.2 detection is not available yet pending 2.12.3's release which I will need to test. 2.12.2 will appear as patched. ↩

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