Pulse Connect Secure < 9.1R16 Client Side Desync (SA45476)

medium Nessus Plugin ID 166980

Language:

Synopsis

A VPN server installed on the remote host is affected by a client side desync vulnerability.

Description

The Pulse Connect Secure installed on the remote host is prior to 9.1R16. It is, therefore, affected by client-side http request smuggling. When the application receives a POST request, it ignores the request's Content-Length header and leaves the POST body on the TCP/TLS socket. This body ends up prefixing the next HTTP request sent down that connection, this means when someone loads website attacker may be able to make browser issue a POST to the application, enabling XSS.

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

Solution

Upgrade to Pulse Connect Secure 9.1R16 or later.

Plugin Details

Severity: Medium

ID: 166980

File Name: pulse_secure_desktop_client_SA45476.nasl

Version: 1.7

Type: local

Agent: windows

Family: Windows

Published: 11/4/2022

Updated: 12/21/2023

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.0

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2022-21826

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

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

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

Vulnerability Information

CPE: cpe:/a:pulsesecure:pulse_secure_desktop_client

Required KB Items: installed_sw/Pulse Connect Secure

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2022

Vulnerability Publication Date: 9/28/2022

Reference Information

CVE: CVE-2022-21826

IAVA: 2022-A-0459-S

Detections

Analytics