Yealink Device Management 3.6.0.20 services command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Yealink Device Management 3.6.0.20 and classified as critical. This issue affects some unknown processing of the file /sm/api/v1/firewall/zone/services. Such manipulation leads to command injection. This vulnerability is documented as CVE-2021-27561. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in Yealink Device Management 3.6.0.20 and classified as critical. Affected by this issue is an unknown code of the file /sm/api/v1/firewall/zone/services. 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 released 10/15/2021. The advisory is shared for download at ssd-disclosure.com. This vulnerability is handled as CVE-2021-27561 since 02/22/2021. Technical details as well as a exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/05/2025). The MITRE ATT&CK project declares the attack technique as T1202.

It is declared as attacked. This issue was added on 11/03/2021 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 11/17/2021:

Apply updates per vendor instructions.

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

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.5
VulDB Meta Temp Score: 9.5

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/22/2021 🔍
10/15/2021 +234 days 🔍
10/15/2021 +0 days 🔍
02/05/2025 +1209 days 🔍

Sourcesinfo

Advisory: ssd-disclosure.com
Status: Confirmed

CVE: CVE-2021-27561 (🔍)
GCVE (CVE): GCVE-0-2021-27561
GCVE (VulDB): GCVE-100-184496
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/15/2021 22:22
Updated: 02/05/2025 08:16
Changes: 10/15/2021 22:22 (37), 10/22/2021 09:33 (1), 04/21/2024 12:57 (26), 09/13/2024 11:48 (1), 02/05/2025 08:16 (30)
Complete: 🔍
Cache ID: 216::103

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