CVE-2018-17785: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

October 17, 2018 (updated September 1, 2021)

In blynk-server in Blynk before 0.39.7, Directory Traversal exists via a ../ in a URI that has /static or /static/js at the beginning, as demonstrated by reading the /etc/passwd file.

References

github.com/advisories/GHSA-4r64-wf76-c53p
github.com/blynkkk/blynk-server/issues/1256
github.com/blynkkk/blynk-server/releases/tag/v0.39.7
nvd.nist.gov/vuln/detail/CVE-2018-17785

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