What’s Vulnerable › Vulnerabilities

CVE-2016-4544

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-05-22 · updated 2026-06-17
• Weakness: CWE-119

Description

The exif_process_TIFF_in_JPEG function in ext/exif/exif.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 does not validate TIFF start data, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via crafted header data.

Affected products

• Debian Linux: 8.0
• Fedoraproject Fedora: 24
• openSUSE Leap: 42.1
• Opensuse: 13.2
• PHP: from 5.5.0 before 5.5.35; from 5.6.0 before 5.6.21; from 7.0.0 before 7.0.6 — fixed in 5.5.35, 5.6.21, 7.0.6

How to fix

Upgrade to a fixed version: PHP 5.5.35, 5.6.21, 7.0.6. Check the vendor advisory for mitigations.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
• http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
• http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
• http://php.net/ChangeLog-5.php
• http://php.net/ChangeLog-7.php
• http://rhn.redhat.com/errata/RHSA-2016-2750.html
• http://www.debian.org/security/2016/dsa-3602
• http://www.openwall.com/lists/oss-security/2016/05/05/21
• http://www.securityfocus.com/bid/89844
• https://bugs.php.net/bug.php?id=72094
• https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=082aecfc3a753ad03be82cf14f03ac065723ec92
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731

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