Heap-based buffer overflow in PHP - CVE-2020-7061
Published: February 25, 2020
Vulnerability identifier: #VU25593
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-7061
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the phar_extract_file() function. A remote attacker can pass specially crafted file to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
PHP
Amazon Linux AMI
Gentoo Linux
Oracle Solaris
Fedora
Tenable.sc
php7 (Alpine package)
php
Amazon Linux AMI
Gentoo Linux
Oracle Solaris
Fedora
Tenable.sc
php7 (Alpine package)
php
How to mitigate CVE-2020-7061
Install updates from vendor's website.
PHP - addressed in versions 7.3.15, 7.4.3
Tenable.sc - update to 5.19.0
php7 (Alpine package) - update to 7.3.15-r0
php - addressed in versions 7.3.15-1.fc30, 7.3.15-1.fc31
Tenable.sc - update to 5.19.0
php7 (Alpine package) - update to 7.3.15-r0
php - addressed in versions 7.3.15-1.fc30, 7.3.15-1.fc31
External References
Related Security Bulletins
- Multiple vulnerabilities in PHP
- Amazon Linux AMI update for php73
- Amazon Linux AMI update for php72
- Gentoo update for PHP
- Oracle Solaris update for third party packages
- Heap-based buffer overflow in php7 (Alpine package)
- Multiple vulnerabilities in Tenable.sc
- Fedora 31 update for php
- Fedora 30 update for php