Use-after-free - CVE-2019-11050

Vulnerability identifier: #VU33365

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-11050

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

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.

Debian Linux
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 (Alpine package)
php7.0 (Debian package)
php
php7.3 (Debian package)
rh-php73-php (Red Hat package)

Install update from vendor's website.

Tenable.sc - update to 5.19.0
php7 (Alpine package) - update to 7.2.26-r0
php7.0 (Debian package) - update to 7.0.33-0+deb9u7
php - addressed in versions 7.3.13-1.fc30, 7.3.13-1.fc31
php7.3 (Debian package) - update to 7.3.14-1~deb10u1
rh-php73-php (Red Hat package) - update to 7.3.20-1.el7

• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00036.html
• https://bugs.php.net/bug.php?id=78793
• https://lists.debian.org/debian-lts-announce/2019/12/msg00034.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N7GCOAE6KVHYJ3UQ4KLPLTGSLX6IRVRN/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWRQPYXVG43Q7DXMXH6UVWMKWGUW552F/
• https://seclists.org/bugtraq/2020/Feb/27
• https://seclists.org/bugtraq/2020/Feb/31
• 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

• Use-after-free in php7 (Alpine package)
• OpenSUSE Linux update for php7
• Red Hat Software Collections 1 for RHEL 7.7 update for rh-php73-php
• Multiple vulnerabilities in Tenable.sc
• Debian update for php7.3
• Debian update for php7.0
• Red Hat Enterprise Linux 8 update for the php:7.3 module
• Fedora 30 update for php
• Fedora 31 update for php