What’s Vulnerable › Vulnerabilities

CVE-2019-11047: Heap-buffer-overflow READ in exif

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-12-23 · updated 2026-06-17
• Weakness: CWE-125

Description

When PHP EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 it is possible to supply it with data what will cause it to read past the allocated buffer. This may lead to information disclosure or crash.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04, 19.04, 19.10
• Debian Linux: 8.0, 9.0, 10.0
• Fedoraproject Fedora: 30, 31
• PHP: from 7.2.0 before 7.2.26; from 7.3.0 before 7.3.13; 7.4.0 — fixed in 7.2.26, 7.3.13

How to fix

Upgrade to a fixed version: PHP 7.2.26, 7.3.13. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00036.html
• https://bugs.php.net/bug.php?id=78910
• https://lists.debian.org/debian-lts-announce/2019/12/msg00034.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/
• https://seclists.org/bugtraq/2020/Feb/27
• https://seclists.org/bugtraq/2020/Feb/31
• https://seclists.org/bugtraq/2021/Jan/3
• https://security.netapp.com/advisory/ntap-20200103-0002/
• https://usn.ubuntu.com/4239-1/
• https://www.debian.org/security/2020/dsa-4626
• https://www.debian.org/security/2020/dsa-4628

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