CVE-2018-12495 : What You Need to Know

A crafted file can result in a denial of service (heap-based buffer over-read) when using the quoteblock function within markdown.c in libmarkdown.a in DISCOUNT 2.2.3a.

Understanding CVE-2018-12495

The quoteblock function in markdown.c in libmarkdown.a in DISCOUNT 2.2.3a allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted file.

What is CVE-2018-12495?

This CVE describes a vulnerability in DISCOUNT 2.2.3a that can be exploited by a crafted file to trigger a denial of service through a heap-based buffer over-read when using the quoteblock function within markdown.c.

The Impact of CVE-2018-12495

Attackers can exploit this vulnerability remotely to cause a denial of service on systems running DISCOUNT 2.2.3a.

Technical Details of CVE-2018-12495

The technical details of the CVE include:

Vulnerability Description

Type: Denial of Service (heap-based buffer over-read)
Component: quoteblock function in markdown.c in libmarkdown.a

Affected Systems and Versions

DISCOUNT 2.2.3a

Exploitation Mechanism

Remote attackers can exploit the vulnerability by using a crafted file to trigger the denial of service.

Mitigation and Prevention

To mitigate the risks associated with CVE-2018-12495, consider the following steps:

Immediate Steps to Take

Update DISCOUNT to a patched version that addresses the vulnerability.
Monitor for any unusual activities on the system that could indicate exploitation.

Long-Term Security Practices

Implement secure coding practices to prevent buffer over-read vulnerabilities.
Regularly update and patch software to protect against known vulnerabilities.

Patching and Updates

Apply security patches provided by the vendor to fix the vulnerability in DISCOUNT.