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Category:   Application (Generic)  >   PHP Vendors:   PHP Group
PHP Multiple Flaws Let Remote Users Obtain Potentially Sensitive Information, Deny Service, and Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1040807
SecurityTracker URL:  http://securitytracker.com/id/1040807
CVE Reference:   CVE-2018-10545, CVE-2018-10546, CVE-2018-10547, CVE-2018-10548, CVE-2018-10549   (Links to External Site)
Updated:  May 14 2018
Original Entry Date:  May 2 2018
Impact:   Denial of service via network, Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.6.x, 7.0.x, 7.1.x, 7.2.x
Description:   Several vulnerabilities were reported in PHP. A remote user can obtain potentially sensitive information on the target system. A remote user can cause denial of service conditions on the target system. A remote user can conduct cross-site scripting attacks.

A remote user can send specially crafted data to trigger a heap buffer overread in exif_iif_add_value() and obtain potentially sensitive information on the target system [CVE-2018-10549].

A remote LDAP server can return a specially crafted response to cause the target application to crash [CVE-2018-10548].

The software does not properly filter HTML code from user-supplied input before displaying the input [CVE-2018-10547]. A remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the PHP software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A user can create specially crafted data that, when processed using a stream filter with 'convert.iconv.*', will cause the target application to enter an infinite loop and consume excessive CPU resources [CVE-2018-10546].

A user can bypass opcache access controls to obtain potentially sensitive information from process memory of another user's PHP application via gcore [CVE-2018-10545].

The specific impact of these vulnerabilities depends on the applications that use the affected functions or services.

p.mehrer from metaways.de, scorneli from Red Hat, cyoung from Tripwire, and phpldap from katzen.cc reported these vulnerabilities.

Impact:   A remote user can obtain potentially sensitive information on the target system.

A remote user can cause denial of service conditions.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the PHP software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Solution:   The vendor has issued a fix (5.6.36, 7.0.30, 7.1.17, 7.2.5).

The vendor advisories are available at:

http://php.net/ChangeLog-5.php
http://php.net/ChangeLog-7.php

Vendor URL:  php.net/ChangeLog-7.php (Links to External Site)
Cause:   Access control error, Boundary error, Input validation error, State error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 14 2018 (Ubuntu Issues Fix) PHP Multiple Flaws Let Remote Users Obtain Potentially Sensitive Information, Deny Service, and Conduct Cross-Site Scripting Attacks
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, 17.10, and 18.04 LTS.
May 17 2018 (Ubuntu Issues Fix) PHP Multiple Flaws Let Remote Users Obtain Potentially Sensitive Information, Deny Service, and Conduct Cross-Site Scripting Attacks
Ubuntu has issued a fix for Ubuntu Linux 12.04 ESM.



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