| Description: | Summary:
The remote host is missing an update for the 'php55, php56' package(s) announced via the ALAS-2016-728 advisory.
Vulnerability Insight:
A stack consumption vulnerability in GD in PHP allows remote attackers to cause a denial of service via a crafted imagefilltoborder call. (CVE-2015-8874)
An integer overflow, leading to a heap-based buffer overflow was found in the imagecreatefromgd2() function of PHP's gd extension. A remote attacker could use this flaw to crash a PHP application or execute arbitrary code with the privileges of the user running that PHP application, using gd via a specially crafted GD2 image. (CVE-2016-5766)
An integer overflow, leading to a heap-based buffer overflow was found in the gdImagePaletteToTrueColor() function of PHP's gd extension. A remote attacker could use this flaw to crash a PHP application or execute arbitrary code with the privileges of the user running that PHP application, using gd via a specially crafted image buffer. (CVE-2016-5767)
A double free flaw was found in the mb_ereg_replace_callback() function of php which is used to perform regex search. This flaw could possibly cause a PHP application to crash. (CVE-2016-5768)
The mcrypt_generic() and mdecrypt_generic() functions are prone to integer overflows, resulting in a heap-based overflow. A remote attacker could use this flaw to crash a PHP application or execute arbitrary code with the privileges of the user running that PHP application. (CVE-2016-5769)
A type confusion issue was found in the SPLFileObject fread() function. A remote attacker able to submit a specially crafted input to a PHP application, which uses this function, could use this flaw to execute arbitrary code with the privileges of the user running that PHP application. (CVE-2016-5770)
A use-after-free vulnerability that can occur when calling unserialize() on untrusted input was discovered. A remote attacker could use this flaw to crash a PHP application or execute arbitrary code with the privileges of the user running that PHP application if the application unserializes untrusted input. (CVE-2016-5771, CVE-2016-5773)
A double free can occur in wddx_deserialize() when trying to deserialize malicious XML input from user's request. This flaw could possibly cause a PHP application to crash. (CVE-2016-5772)
It was discovered that PHP did not properly protect against the HTTP_PROXY variable name clash. A remote attacker could possibly use this flaw to redirect HTTP requests performed by a PHP script to an attacker-controlled proxy via a malicious HTTP request. (CVE-2016-5385)
(Updated on 2016-08-17: CVE-2016-5385 was fixed in this release but was not previously part of this errata)
Affected Software/OS:
'php55, php56' package(s) on Amazon Linux.
Solution:
Please install the updated package(s).
CVSS Score:
7.5
CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P
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