SB2022070644 - Red Hat Software Collections update for rh-php73-php
Published: July 6, 2022 Updated: July 26, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Out-of-bounds write (CVE-ID: CVE-2021-21703)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists in the way PHP handles shared memory access, when using PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users. A child process can access shared memory with the main process and write to it. As a result, it is possible to cause the root process to conduct invalid memory reads and writes with root privileges. A local user can trigger an out-of-bounds write error and execute arbitrary code on the system with root privileges.
2) Input validation error (CVE-ID: CVE-2021-21707)
The vulnerability allows a remote attacker to inject arbitrary XML code.
The vulnerability exists due to insufficient validation of user-supplied input within the simplexml_load_file() PHP function when processing NULL byte character (e.g. %00). A remote attacker can pass specially crafted URL to the application and bypass implemented security restrictions.
3) Use of uninitialized resource (CVE-ID: CVE-2022-31625)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to usage of uninitialized array in the pg_query_params() function. A remote attacker with ability to control query parameters can trigger memory corruption and execute arbitrary code on the system.
4) Buffer overflow (CVE-ID: CVE-2022-31626)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing password in mysqlnd/pdo in mysqlnd_wireprotocol.c. A remote attacker with ability to control password that is passed via PDO to MySQL server can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.