Red Hat Binutils Readelf Denial-of-Service Vulnerability

A denial-of-service vulnerability has been identified in the binutils package, specifically within the readelf utility. This flaw allows a local attacker to cause a system to become unresponsive by convincing a user to process a specially crafted Executable and Linkable Format (ELF) file. The exploitation of this vulnerability leads to excessive resource consumption, causing the system to run out of memory, or it can result in a program crash due to a null pointer dereference.

Impact

Exploitation of this vulnerability can cause a program crash or lead to the process being terminated by the operating system's out-of-memory killer. Additionally, in rare cases, it may allow for unauthorized memory access or code execution under certain conditions.

Reproduction

The vulnerability can be reproduced by using a crafted ELF file that exploits the readelf utility. This file should be designed to trigger excessive memory allocation, leading to resource exhaustion, or to cause a null pointer dereference, which results in a segmentation fault.

Remediation

Users are advised to avoid processing untrusted or suspicious ELF files with the readelf utility. No specific configuration or operational control is available to prevent this vulnerability without affecting the intended functionality of readelf.