Debian DSA-4743-1 : ruby-kramdown - security update

critical Nessus Plugin ID 139521

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Synopsis

The remote Debian host is missing a security-related update.

Description

A flaw was discovered in ruby-kramdown, a fast, pure ruby, Markdown parser and converter, which could result in unintended read access to files or unintended embedded Ruby code execution when the {::options /} extension is used together with the 'template' option.

The update introduces a new option 'forbidden_inline_options' to restrict the options allowed with the {::options /} extension. By default the 'template' option is forbidden.

Solution

Upgrade the ruby-kramdown packages.

For the stable distribution (buster), this problem has been fixed in version 1.17.0-1+deb10u1.

Plugin Details

Severity: Critical

ID: 139521

File Name: debian_DSA-4743.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 8/12/2020

Updated: 2/26/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2020-14001

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:ruby-kramdown

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 8/10/2020

Vulnerability Publication Date: 7/17/2020

Reference Information

CVE: CVE-2020-14001

DSA: 4743

Detections

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