CVE-2023-49735: Apache Tiles: Unvalidated input may lead to path traversal and XXE

[Arnout Engelen <engelen () apache org>]

Severity: low

Affected versions:

- Apache Tiles 2.0.0 before *

Description:

** UNSUPPORTED WHEN ASSIGNED **

The value set as the DefaultLocaleResolver.LOCALE_KEY attribute on the session was not validated while resolving XML 
definition files, leading to possible path traversal and eventually SSRF/XXE when passing user-controlled data to this 
key. Passing user-controlled data to this key may be relatively common, as it was also used like that to set the 
language in the 'tiles-test' application shipped with Tiles.

This issue affects Apache Tiles from version 2 onwards.

NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Credit:

Joseph Beeton of Contrast Security (finder)

References:

https://attic.apache.org/projects/tiles.html
https://www.cve.org/CVERecord?id=CVE-2023-49735