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Ubuntu 18.04 LTS : OpenConnect vulnerability (USN-4565-1)

critical Nessus Plugin ID 141182

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4565-1 advisory.

 It was discovered that OpenConnect has a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. An attacker could use it to provoke a denial of service (crash).

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 libopenconnect-dev, libopenconnect5 and / or openconnect packages.

See Also

https://ubuntu.com/security/notices/USN-4565-1

Plugin Details

Severity: Critical

ID: 141182

File Name: ubuntu_USN-4565-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 10/5/2020

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, 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-2019-16239

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:libopenconnect-dev, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libopenconnect5, p-cpe:/a:canonical:ubuntu_linux:openconnect

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/5/2020

Vulnerability Publication Date: 9/17/2019

Reference Information

CVE: CVE-2019-16239

USN: 4565-1