CVE-2017-17818 : Security Advisory and Response

NASM version 2.14rc0 contains a vulnerability that can lead to a denial of service attack due to a heap-based buffer over-read. This CVE was published on December 21, 2017.

Understanding CVE-2017-17818

Netwide Assembler (NASM) version 2.14rc0 is susceptible to a heap-based buffer over-read, potentially enabling remote attackers to launch denial of service attacks.

What is CVE-2017-17818?

This CVE pertains to a vulnerability in NASM version 2.14rc0, specifically in the paste_tokens function within asm/prepro.c, where a heap-based buffer over-read can be exploited remotely.

The Impact of CVE-2017-17818

The vulnerability allows attackers to trigger a denial of service condition by exploiting the heap-based buffer over-read, potentially disrupting the normal operation of the affected system.

Technical Details of CVE-2017-17818

NASM version 2.14rc0 vulnerability details and affected systems.

Vulnerability Description

The vulnerability in NASM version 2.14rc0 is related to a while loop in the paste_tokens function in asm/prepro.c, leading to a heap-based buffer over-read that can be exploited remotely.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: 2.14rc0 (affected)

Exploitation Mechanism

The vulnerability can be exploited remotely by malicious actors to trigger a denial of service attack by leveraging the heap-based buffer over-read in NASM version 2.14rc0.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2017-17818 vulnerability.

Immediate Steps to Take

Update NASM to a patched version to address the heap-based buffer over-read vulnerability.
Monitor security advisories for any related patches or updates.

Long-Term Security Practices

Regularly update software and libraries to prevent known vulnerabilities.
Implement network security measures to detect and block potential attacks.

Patching and Updates

Apply patches provided by NASM to fix the vulnerability and prevent exploitation.