CVE-2017-7210 : What You Need to Know

The use of objdump in GNU Binutils 2.28 can lead to program crashes due to multiple instances of heap-based buffer over-reads. These over-reads occur when handling corrupted STABS enum type strings in a manipulated object file, with the buffer sizes being either 1 or 8.

Understanding CVE-2017-7210

What is CVE-2017-7210?

objdump in GNU Binutils 2.28 is vulnerable to multiple heap-based buffer over-reads (of size 1 and size 8) while handling corrupt STABS enum type strings in a crafted object file, leading to program crash.

The Impact of CVE-2017-7210

This vulnerability can result in program crashes, potentially leading to denial of service or other security implications.

Technical Details of CVE-2017-7210

Vulnerability Description

The vulnerability in objdump in GNU Binutils 2.28 arises from handling corrupt STABS enum type strings in a manipulated object file, causing heap-based buffer over-reads of size 1 and 8.

Affected Systems and Versions

Affected Version: GNU Binutils 2.28
Systems using objdump in this version are vulnerable to the described heap-based buffer over-reads.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious object file with corrupted STABS enum type strings, triggering the heap-based buffer over-reads and potentially causing program crashes.

Mitigation and Prevention

Immediate Steps to Take

Update GNU Binutils to a non-vulnerable version.
Avoid using objdump on untrusted or manipulated object files.

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities.
Implement code review processes to catch potential buffer over-read issues during development.

Patching and Updates

Stay informed about security advisories from GNU Binutils and apply patches promptly to address any identified vulnerabilities.