VDB-193801 · CVE-2021-39363 · GCVE-0-2021-39363

Honeywell HDZP252DI/HBW2PER1 ARP Cache authentication replay

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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Honeywell HDZP252DI and HBW2PER1. This vulnerability affects unknown code of the component ARP Cache Handler. This manipulation causes authentication replay. This vulnerability is handled as CVE-2021-39363. The attack can only be done within the local network. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Honeywell HDZP252DI and HBW2PER1 (version now known) and classified as critical. Affected by this vulnerability is some unknown processing of the component ARP Cache Handler. The manipulation with an unknown input leads to a authentication replay vulnerability. The CWE definition for the vulnerability is CWE-294. A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 02/25/2022. The advisory is shared at buildings.honeywell.com. This vulnerability is known as CVE-2021-39363 since 08/22/2021. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1040 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Honeywell

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
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: Authentication replay
CWE: CWE-294 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/22/2021 🔍
02/25/2022 +187 days 🔍
02/25/2022 +0 days 🔍
02/28/2022 +3 days 🔍

Sourcesinfo

Advisory: buildings.honeywell.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-39363 (🔍)
GCVE (CVE): GCVE-0-2021-39363
GCVE (VulDB): GCVE-100-193801

Entryinfo

Created: 02/25/2022 12:47
Updated: 02/28/2022 08:59
Changes: 02/25/2022 12:47 (36), 02/28/2022 08:59 (2)
Complete: 🔍
Cache ID: 216::103