Information disclosure in PHP - CVE-2015-3412
Published: November 27, 2018
Vulnerability identifier: #VU16115
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-3412
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to PHP before 5.4.40, 5.5.x before 5.5.24, and 5.6.x before 5.6.8 does not ensure that pathnames lack %00 sequences. A remote attacker can read arbitrary files via crafted input to an application that calls the stream_resolve_include_path function in ext/standard/streamsfuncs.c, as demonstrated by a filename.extension attack that bypasses an intended configuration in which client users may read files with only one specific extension.
The weakness exists due to PHP before 5.4.40, 5.5.x before 5.5.24, and 5.6.x before 5.6.8 does not ensure that pathnames lack %00 sequences. A remote attacker can read arbitrary files via crafted input to an application that calls the stream_resolve_include_path function in ext/standard/streamsfuncs.c, as demonstrated by a filename.extension attack that bypasses an intended configuration in which client users may read files with only one specific extension.
Affected software
PHP
php5 (Ubuntu package)
SUSE Linux
php5 (Ubuntu package)
SUSE Linux
How to mitigate CVE-2015-3412
Install update from vendor's website.
PHP - addressed in versions 5.4.40, 5.5.24, 5.6.8
php5 (Ubuntu package) - addressed in versions 5.3.10-1ubuntu3.19, 5.5.9+dfsg-1ubuntu4.11, 5.5.12+dfsg-2ubuntu4.6, 5.6.4+dfsg-4ubuntu6.2
php5 (Ubuntu package) - addressed in versions 5.3.10-1ubuntu3.19, 5.5.9+dfsg-1ubuntu4.11, 5.5.12+dfsg-2ubuntu4.6, 5.6.4+dfsg-4ubuntu6.2