SB2020040115 - Red Hat Enterprise Linux 7 update for php
Published: April 1, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Reflected cross-site scripting (CVE-ID: CVE-2018-5712)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists on the PHAR 404 error page due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
2) Stack-based buffer overflow (CVE-ID: CVE-2018-7584)
The vulnerability allows a remote attacker to cause DoS condition on the target system.The weakness exists due to stack-based buffer overflow when handling malicious input. A remote attacker can send specially crafted HTTP response packets, trigger memory corruption and cause the application to crash.
3) Cross-site scripting (CVE-ID: CVE-2018-10547)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists in the phar_do_404() and phar_do_403() functions due to insufficient sanitization of user-supplied data processed by the phar_do_404() and phar_do_403() functions, as defined in the ext/phar/phar_object.c source code file. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
The vulnerability exists due to an incomplete fix for CVE-2018-5712.
4) Out-of-bounds read (CVE-ID: CVE-2019-9024)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the base64_decode_xmlrpc() function in ext/xmlrpc/libxmlrpc/base64.c when parsing untrusted input via the xmlrpc_decode() PHP function. A remote attacker can setup a malicious XMLRPC server, trick the application into connecting to it, trigger out-of-bounds read error and read contents of memory on the system.
Remediation
Install update from vendor's website.