PHP Multiple Flaws Let Remote Users Obtain Potentially Sensitive Information, Deny Service, and Conduct Cross-Site Scripting Attacks
Severity Rating: Medium
Version(s): 5.6.x, 7.0.x, 7.1.x, 7.2.x
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].
The specific impact of these vulnerabilities depends on the applications that use the affected functions or services.
The vendor has issued a fix (5.6.36, 7.0.30, 7.1.17, 7.2.5).
Users are advised to apply updates.
More information is available on:
Mauritian Computer Emergency Response Team (CERT-MU)
National Computer Board
7th Floor, Stratton Court
La Poudriere Street