Security restrictions bypass in PHP - CVE-2015-2348
Published: November 27, 2018
Vulnerability identifier: #VU16111
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-2348
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error when the move_uploaded_file implementation in ext/standard/basic_functions.c in PHP before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7 truncates a pathname upon encountering a x00 character. A remote attacker can bypass intended extension restrictions and create files with unexpected names via a crafted second argument.
The weakness exists due to an error when the move_uploaded_file implementation in ext/standard/basic_functions.c in PHP before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7 truncates a pathname upon encountering a x00 character. A remote attacker can bypass intended extension restrictions and create files with unexpected names via a crafted second argument.
Affected software
PHP
php5 (Ubuntu package)
php5 (Ubuntu package)
How to mitigate CVE-2015-2348
Install update from vendor's website.
PHP - addressed in versions 5.4.39, 5.5.23, 5.6.7
php5 (Ubuntu package) - addressed in versions 5.3.2-1ubuntu4.30, 5.3.10-1ubuntu3.18, 5.5.9+dfsg-1ubuntu4.9, 5.5.12+dfsg-2ubuntu4.4
php5 (Ubuntu package) - addressed in versions 5.3.2-1ubuntu4.30, 5.3.10-1ubuntu3.18, 5.5.9+dfsg-1ubuntu4.9, 5.5.12+dfsg-2ubuntu4.4