The islist 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, as demonstrated by mkd2html.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The islist 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, as demonstrated by mkd2html.
    (CVE-2018-11504)

Note that Nessus relies on the presence of the package as reported by the vendor.

Upstream version 2.2.4

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several heap buffer overflows were found in discount, an implementation of the Markdown markup language, that could be triggered with specially crafted Markdown data and would cause discount to read past the end of internal buffers.

Several heap-based buffer over-reads were found in discount, an implementation of the Markdown markup language in C, that allowed remote attackers to cause a denial of service via specially crafted files.

For Debian 8 'Jessie', these problems have been fixed in version 2.1.7-1+deb8u1.

We recommend that you upgrade your discount packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
222097	Linux Distros Unpatched Vulnerability : CVE-2018-11504	Nessus	Misc.	medium
120354	Fedora 28 : discount (2018-38bdbafa96)	Nessus	Fedora Local Security Checks	medium
117503	Debian DSA-4293-1 : discount - security update	Nessus	Debian Local Security Checks	medium
117367	Debian DLA-1499-1 : discount security update	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2018-11504

medium

Tenable Plugins

medium

medium

medium

medium