VDB-187892 · CVE-2021-20141 · GCVE-0-2021-20141

Gryphon Tower Router Service Port 9999 command injection

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.
9.0	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Gryphon Tower Router. Affected by this issue is some unknown functionality of the component Service Port 9999. Such manipulation leads to command injection. This vulnerability is uniquely identified as CVE-2021-20141. The attack can be launched remotely. No exploit exists. Restrictive firewalling should be applied.

Detailsinfo

A vulnerability was found in Gryphon Tower Router (Router Operating System) (unknown version). It has been rated as very critical. Affected by this issue is an unknown code block of the component Service Port 9999. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 12/09/2021. The advisory is shared for download at tenable.com. This vulnerability is handled as CVE-2021-20141 since 12/17/2020. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 12/15/2021). The MITRE ATT&CK project declares the attack technique as T1202.

Addressing this vulnerability is possible by firewalling .

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

Gryphon

Name

Tower Router

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 9.0

VulDB Base Score: 9.8
VulDB Temp Score: 9.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/17/2020 🔍
12/09/2021 +357 days 🔍
12/09/2021 +0 days 🔍
12/15/2021 +6 days 🔍

Sourcesinfo

Advisory: tenable.com
Status: Not defined

CVE: CVE-2021-20141 (🔍)
GCVE (CVE): GCVE-0-2021-20141
GCVE (VulDB): GCVE-100-187892

Entryinfo

Created: 12/09/2021 19:01
Updated: 12/15/2021 09:31
Changes: 12/09/2021 19:01 (38), 12/15/2021 09:29 (1), 12/15/2021 09:31 (18)
Complete: 🔍
Cache ID: 216::103