GHSA-px9g-8hgv-jvg2
MEDIUMGHSA-px9g-8hgv-jvg2 is a medium-severity (CVSS 6.5) Uncontrolled Resource Consumption vulnerability in kamadak-exif. O3 Security confirms whether GHSA-px9g-8hgv-jvg2 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
kamadak-exif vulnerable to Infinite loop when parsing PNG files
Blast Radius
kamadak-exifReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
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
- https://github.com/kamadak/exif-rs/security/advisories/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
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | kamadak-exif | ≥ 0.5.2&&< 0.5.3 | 0.5.3 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for kamadak-exif. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update kamadak-exif to 0.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-px9g-8hgv-jvg2 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-px9g-8hgv-jvg2 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-px9g-8hgv-jvg2. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-px9g-8hgv-jvg2 in your dependencies?
O3 detects GHSA-px9g-8hgv-jvg2 across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.