CVE-2020-35493 : Security Advisory and Response
Learn about CVE-2020-35493, a vulnerability in binutils versions prior to 2.34 that could allow an attacker to cause an out-of-bounds read, impacting application availability. Find mitigation steps and prevention measures here.
A heap buffer overflow vulnerability in binutils version prior to 2.34 could allow an attacker to cause an out-of-bounds read, impacting application availability.
Understanding CVE-2020-35493
This CVE involves a flaw in binutils that could lead to a heap buffer overflow.
What is CVE-2020-35493?
The vulnerability in binutils in bfd/pef.c could be exploited by an attacker submitting a crafted PEF file to be parsed by objdump, resulting in a heap buffer overflow and out-of-bounds read.
The Impact of CVE-2020-35493
The vulnerability could impact application availability due to the out-of-bounds read caused by the heap buffer overflow.
Technical Details of CVE-2020-35493
This section provides more technical insights into the CVE.
Vulnerability Description
The flaw in binutils versions prior to 2.34 allows for a heap buffer overflow, leading to an out-of-bounds read.
Affected Systems and Versions
- Product: binutils
- Vendor: n/a
- Affected Version: binutils 2.34
Exploitation Mechanism
- Attacker submits a crafted PEF file to be parsed by objdump
- Causes a heap buffer overflow and out-of-bounds read
Mitigation and Prevention
Protect your systems from CVE-2020-35493 with these steps:
Immediate Steps to Take
- Update binutils to version 2.34 or later
- Monitor for any unusual activities on the system
Long-Term Security Practices
- Regularly update software and apply security patches
- Conduct security audits and penetration testing
Patching and Updates
- Apply patches provided by the vendor
- Stay informed about security advisories and updates