CVE-2021-23772: Improper Link Resolution Before File Access ('Link Following')

January 6, 2022

This affects all versions of package github.com/kataras/iris; all versions of package github.com/kataras/iris/v12. The unsafe handling of file names during upload using UploadFormFiles method may enable attackers to write to arbitrary locations outside the designated target folder.

References

github.com/advisories/GHSA-jcxc-rh6w-wf49
github.com/kataras/iris/commit/e213dba0d32ff66653e0ef124bc5088817264b08
nvd.nist.gov/vuln/detail/CVE-2021-23772

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