Impact

Reader::read_from_container can cause an infinite loop when a crafted PNG file is given.

Patches

Version 0.5.3 includes the fix.

Workarounds

No workaround is available.
Applications that do not pass files with the PNG signature to Reader::read_from_container are not affected.

References

• GHSA-px9g-8hgv-jvg2
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21235

For more information

If you have any questions or comments about this advisory:

• Open an issue in github.com/kamadak/exif-rs