CVE-2020-16593 : Security Advisory and Response
Learn about CVE-2020-16593, a Null Pointer Dereference vulnerability in the Binary File Descriptor (BFD) library in GNU Binutils 2.35, allowing denial of service attacks via crafted files. Find mitigation steps and prevention measures.
A Null Pointer Dereference vulnerability in the Binary File Descriptor (BFD) library in GNU Binutils 2.35 can lead to a denial of service via a crafted file.
Understanding CVE-2020-16593
This CVE involves a specific vulnerability in the Binary File Descriptor (BFD) library distributed in GNU Binutils 2.35.
What is CVE-2020-16593?
The vulnerability is a Null Pointer Dereference issue in the BFD library, specifically in the scan_unit_for_symbols function, as demonstrated in addr2line. This flaw can be exploited by an attacker using a specially crafted file to cause a denial of service.
The Impact of CVE-2020-16593
The vulnerability can result in a denial of service condition on systems running the affected version of GNU Binutils 2.35, potentially disrupting normal operations and causing system instability.
Technical Details of CVE-2020-16593
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability is a Null Pointer Dereference in the Binary File Descriptor (BFD) library in GNU Binutils 2.35, specifically in the scan_unit_for_symbols function, as demonstrated in addr2line.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: GNU Binutils 2.35
Exploitation Mechanism
The vulnerability can be exploited by an attacker through the use of a specially crafted file, triggering the Null Pointer Dereference and leading to a denial of service.
Mitigation and Prevention
Protecting systems from CVE-2020-16593 is crucial to maintaining security.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Implement proper input validation mechanisms to prevent malicious files from triggering the vulnerability.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Conduct security assessments and audits to identify and address vulnerabilities proactively.
Patching and Updates
- Stay informed about security advisories related to GNU Binutils and apply patches as soon as they are released.