Out-of-bounds read in PHP - CVE-2019-11042

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Main Vulnerability Database Vulnerabilities #VU21217

Out-of-bounds read in PHP - CVE-2019-11042

Published: September 20, 2019


Vulnerability identifier: #VU21217
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-11042
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the exif_read_data() function in PHP EXIF extention. A remote attacker can create a specially crafted image file, pass it to the application, trigger out-of-bounds read error and read contents of memory on the system.


Affected software

PHP
Amazon Linux AMI
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Opensuse
Fedora
Red Hat Software Collections
Tenable.sc
php7.0 (Debian package)
php7 (Alpine package)
php7.3 (Debian package)
php

How to mitigate CVE-2019-11042

Install updates from vendor's website.

PHP - addressed in versions 7.1.31, 7.2.21, 7.3.8
Tenable.sc - update to 5.19.0
php7.0 (Debian package) - update to 7.0.33-0+deb9u5
php7 (Alpine package) - update to 7.1.32-r0
php7.3 (Debian package) - update to 7.3.9-1~deb10u1
php - addressed in versions 7.2.21-1.fc29, 7.3.8-1.fc30

External References

Related Security Bulletins