CVE-2020-21685 : What You Need to Know
Learn about CVE-2020-21685, a Buffer Overflow vulnerability in hashtbl.c in nasm 2.15rc0, allowing remote attackers to cause denial of service. Find mitigation steps and preventive measures.
CVE-2020-21685 is a Buffer Overflow vulnerability in the hash_findi function in hashtbl.c in nasm 2.15rc0. This vulnerability allows remote attackers to cause a denial of service via a crafted asm file.
Understanding CVE-2020-21685
This section provides insights into the nature and impact of CVE-2020-21685.
What is CVE-2020-21685?
CVE-2020-21685 is a Buffer Overflow vulnerability in the hash_findi function in hashtbl.c in nasm 2.15rc0. It enables remote attackers to trigger a denial of service by exploiting a crafted asm file.
The Impact of CVE-2020-21685
The vulnerability poses a risk of denial of service attacks, potentially disrupting the normal operation of systems running the affected version of nasm.
Technical Details of CVE-2020-21685
This section delves into the technical aspects of CVE-2020-21685.
Vulnerability Description
The Buffer Overflow vulnerability in the hash_findi function in hashtbl.c in nasm 2.15rc0 allows attackers to disrupt services by exploiting specially crafted asm files.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions Affected: n/a
Exploitation Mechanism
The vulnerability can be exploited remotely by sending maliciously crafted asm files to the target system, triggering a buffer overflow and causing a denial of service.
Mitigation and Prevention
In this section, you will find guidance on mitigating the risks associated with CVE-2020-21685.
Immediate Steps to Take
- Apply security patches or updates provided by the vendor promptly.
- Implement network-level protections to filter out potentially malicious traffic.
- Monitor system logs for any unusual activities that could indicate an ongoing attack.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
- Educate users and administrators about safe coding practices and the importance of security updates.
Patching and Updates
- Stay informed about security advisories from the vendor and promptly apply patches to address known vulnerabilities.