Debian DSA-4607-1 : openconnect - security update

critical Nessus Plugin ID 133110

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Synopsis

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

Description

Lukas Kupczyk reported a vulnerability in the handling of chunked HTTP in openconnect, an open client for Cisco AnyConnect, Pulse and GlobalProtect VPN. A malicious HTTP server (after having accepted its identity certificate), can provide bogus chunk lengths for chunked HTTP encoding and cause a heap-based buffer overflow.

Solution

Upgrade the openconnect packages.

For the oldstable distribution (stretch), this problem has been fixed in version 7.08-1+deb9u1.

For the stable distribution (buster), this problem has been fixed in version 8.02-1+deb10u1.

Plugin Details

Severity: Critical

ID: 133110

File Name: debian_DSA-4607.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 1/21/2020

Updated: 3/29/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, 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: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:openconnect, cpe:/o:debian:debian_linux:9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/20/2020

Vulnerability Publication Date: 9/17/2019

Reference Information

CVE: CVE-2019-16239

DSA: 4607

Detections

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