CVE-2017-7224 : Exploit Details and Defense Strategies

In GNU Binutils 2.28, a vulnerability exists in the find_nearest_line function within objdump, leading to a program crash due to an invalid write of size 1 when disassembling a corrupted binary with an empty function name.

Understanding CVE-2017-7224

This CVE entry describes a specific vulnerability in GNU Binutils 2.28 that can be exploited when handling corrupted binaries.

What is CVE-2017-7224?

The vulnerability in the find_nearest_line function of objdump in GNU Binutils 2.28 allows for an invalid write operation of size 1, triggered by disassembling a corrupted binary containing an empty function name.

The Impact of CVE-2017-7224

The vulnerability can result in a program crash due to the invalid write operation, potentially leading to denial of service or other security implications.

Technical Details of CVE-2017-7224

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The find_nearest_line function in objdump in GNU Binutils 2.28 is susceptible to an invalid write operation of size 1 when processing corrupt binaries with empty function names, causing program crashes.

Affected Systems and Versions

Affected Version: GNU Binutils 2.28
Other versions may also be impacted if they contain the same codebase.

Exploitation Mechanism

The vulnerability is exploited by providing a corrupted binary with an empty function name to trigger the invalid write operation and subsequent program crash.

Mitigation and Prevention

Protecting systems from CVE-2017-7224 involves taking immediate steps and implementing long-term security practices.

Immediate Steps to Take

Apply patches or updates provided by the software vendor to address the vulnerability.
Avoid processing untrusted or corrupted binaries to mitigate the risk of exploitation.

Long-Term Security Practices

Regularly update software and libraries to ensure the latest security fixes are in place.
Conduct security assessments and audits to identify and remediate vulnerabilities proactively.

Patching and Updates

Check for official patches or updates from GNU Binutils or relevant software vendors to fix the vulnerability.