K52308021 : GNU C Library (glibc) vulnerabilities CVE-2022-23218 and CVE-2022-23219

Security Advisory Description

• CVE-2022-23218

The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its path argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution.

• CVE-2022-23219

The deprecated compatibility function clnt_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its hostname argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution.

Impact

A successful attack may allow an attacker to read or write to a memory location that is outside of the intended boundary of the memory buffer, resulting in arbitrary code execution or causing the system to stop responding.