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HistoryApr 26, 2021 - 4:04 p.m.

Path Traversal and Improper Input Validation in Apache Commons IO

2021-04-2616:04:00
Google
osv.dev
83
apache commons io
path traversal
input validation
security vulnerability
file access

EPSS

0.002

Percentile

57.2%

In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like “//…/foo”, or “\…\foo”, the result would be the same value, thus possibly providing access to files in the parent directory, but not further above (thus “limited” path traversal), if the calling code would use the result to construct a path value.

References