Ivanti Pulse Secure Virtual Traffic Manager up to 21.0 HTTP/2 Request request smuggling

EntryHistoryDiffjsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

A vulnerability was found in Ivanti Pulse Secure Virtual Traffic Manager up to 21.0. It has been classified as critical. This affects some unknown functionality of the component HTTP2 Request Handler. The manipulation with an unknown input leads to a request smuggling vulnerability. CWE is classifying the issue as CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 05/14/2021. The advisory is shared at kb.pulsesecure.net. This vulnerability is uniquely identified as CVE-2021-31922. Neither technical details nor an exploit are publicly available.

Upgrading to version 18.2R3, 19.2R4, 20.1R2, 20.2R1, 20.3R1 or 21.1 eliminates this vulnerability. The upgrade is hosted for download at kb.pulsesecure.net.

Productinfo

Vendor

Ivanti

Name

Pulse Secure Virtual Traffic Manager

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Request smuggling
CWE: CWE-444
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Pulse Secure Virtual Traffic Manager 18.2R3/19.2R4/20.1R2/20.2R1/20.3R1/21.1

Timelineinfo

04/30/2021 🔍
05/14/2021 +14 days 🔍
05/14/2021 +0 days 🔍
10/17/2022 +521 days 🔍

Sourcesinfo

Advisory: kb.pulsesecure.net
Status: Confirmed

CVE: CVE-2021-31922 (🔍)

Entryinfo

Created: 05/14/2021 09:29
Updated: 10/17/2022 11:24
Changes: 05/14/2021 09:29 (39), 05/16/2021 13:16 (5), 10/17/2022 11:24 (2)
Complete: 🔍