CVE-2015-4021

CVE Details

Release Date:	2015-05-14
Impact:	Moderate	What is this?

Description

The phar_parse_tarfile function in ext/phar/tar.c in PHP before5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 does not verify that the first character of a filename is different from the \0 character, which allows remote attackers to cause a denial of service (integer underflow and memory corruption) via a crafted entry in a tar archive.

See more information about CVE-2015-4021 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 metrics

Base Score:	5.1
Vector String:	AV:N/AC:H/Au:N/C:P/I:P/A:P
Version:	2.0
Attack Vector:	Network
Attack Complexity:	High
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (php)	ELSA-2015-1218	2015-07-09
Oracle Linux version 6 (php54-php)	ELSA-2015-1219	2016-02-04
Oracle Linux version 7 (php)	ELSA-2015-1135	2015-06-23
Oracle Linux version 7 (php54-php)	ELSA-2015-1219	2016-02-04
Oracle Linux version 7 (php55-php)	ELSA-2015-1186	2016-02-04