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Ubuntu 20.04 LTS : kramdown vulnerability (USN-4562-1)

critical Nessus Plugin ID 141095

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4562-1 advisory.

 It was discovered that kramdown insecurely handled certain crafted input. An attacker could use this vulnerability to read restricted files or execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected kramdown and / or ruby-kramdown packages.

See Also

https://ubuntu.com/security/notices/USN-4562-1

Plugin Details

Severity: Critical

ID: 141095

File Name: ubuntu_USN-4562-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 9/30/2020

Updated: 8/27/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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: p-cpe:/a:canonical:ubuntu_linux:kramdown, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:ruby-kramdown

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/30/2020

Vulnerability Publication Date: 7/17/2020

Reference Information

CVE: CVE-2020-14001

USN: 4562-1