VDB-171260 · CVE-2021-27892 · GCVE-0-2021-27892

SSH Tectia Client up to 6.4.18 on Windows ConnectSecure privileges management

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.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in SSH Tectia Client up to 6.4.18 on Windows. Affected by this issue is some unknown functionality of the component ConnectSecure. Such manipulation leads to an unknown weakness. This vulnerability is referenced as CVE-2021-27892. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in SSH Tectia Client up to 6.4.18 on Windows (SSH Server Software). It has been rated as critical. Affected by this issue is an unknown code block of the component ConnectSecure. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability.

The weakness was published 03/15/2021. The advisory is shared for download at info.ssh.com. This vulnerability is handled as CVE-2021-27892. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 6.4.19 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

SSH Server Software

Vendor

Name

Tectia Client

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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: Tectia Client 6.4.19

Timelineinfo

03/02/2021 🔍
03/15/2021 +13 days 🔍
03/15/2021 +0 days 🔍
04/01/2021 +17 days 🔍

Sourcesinfo

Advisory: info.ssh.com
Status: Confirmed

CVE: CVE-2021-27892 (🔍)
GCVE (CVE): GCVE-0-2021-27892
GCVE (VulDB): GCVE-100-171260

Entryinfo

Created: 03/15/2021 18:24
Updated: 04/01/2021 12:58
Changes: 03/15/2021 18:24 (39), 04/01/2021 12:53 (5), 04/01/2021 12:58 (20)
Complete: 🔍
Cache ID: 216::103