CVE-2021-34736 : A vulnerability in the web-based management interface of Cisco Integrated Manage

A vulnerability in the web-based management interface of Cisco Integrated Management Controller (IMC) Software could allow an unauthenticated, remote attacker to cause the web-based management interface to unexpectedly restart. The vulnerability is due to insufficient input validation on the web-based management interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to cause the interface to restart, resulting in a denial of service (DoS) condition.

Published 2021-10-21 03:15:07

Updated 2021-10-26 15:18:42

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Input validationDenial of service

Products affected by CVE-2021-34736

Cisco » Unified Computing System
Versions before (<) 4.1\(2g\)
cpe:2.3:a:cisco:unified_computing_system:*:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Ucs C125 M5 » Version: N/A
When used together with: Cisco » Ucs C22 M3 » Version: N/A
When used together with: Cisco » Ucs C220 M3 » Version: N/A
When used together with: Cisco » Ucs C220 M4 » Version: N/A
When used together with: Cisco » Ucs C220 M5 » Version: N/A
When used together with: Cisco » Ucs C225 M6 » Version: N/A
When used together with: Cisco » Ucs C24 M3 » Version: N/A
When used together with: Cisco » Ucs C240 M3 » Version: N/A
When used together with: Cisco » Ucs C240 M5 » Version: N/A
When used together with: Cisco » Ucs C240 Sd M5 » Version: N/A
When used together with: Cisco » Ucs C245 M6 » Version: N/A
When used together with: Cisco » Ucs C260 M2 » Version: N/A
When used together with: Cisco » Ucs C3160 » Version: N/A
When used together with: Cisco » Ucs C3260 » Version: N/A
When used together with: Cisco » Ucs C420 M3 » Version: N/A
When used together with: Cisco » Ucs C4200 » Version: N/A
When used together with: Cisco » Ucs C460 M2 » Version: N/A
When used together with: Cisco » Ucs C460 M4 » Version: N/A
When used together with: Cisco » Ucs C480 M5 » Version: N/A
When used together with: Cisco » Ucs C480 Ml M5 » Version: N/A
When used together with: Cisco » Ucs C890 M5 » Version: N/A
Cisco » Unified Computing System
Versions from including (>=) 4.2 and before (<) 4.2\(1b\)
cpe:2.3:a:cisco:unified_computing_system:*:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Ucs C125 M5 » Version: N/A
When used together with: Cisco » Ucs C22 M3 » Version: N/A
When used together with: Cisco » Ucs C220 M3 » Version: N/A
When used together with: Cisco » Ucs C220 M4 » Version: N/A
When used together with: Cisco » Ucs C220 M5 » Version: N/A
When used together with: Cisco » Ucs C225 M6 » Version: N/A
When used together with: Cisco » Ucs C24 M3 » Version: N/A
When used together with: Cisco » Ucs C240 M3 » Version: N/A
When used together with: Cisco » Ucs C240 M5 » Version: N/A
When used together with: Cisco » Ucs C240 Sd M5 » Version: N/A
When used together with: Cisco » Ucs C245 M6 » Version: N/A
When used together with: Cisco » Ucs C260 M2 » Version: N/A
When used together with: Cisco » Ucs C3160 » Version: N/A
When used together with: Cisco » Ucs C3260 » Version: N/A
When used together with: Cisco » Ucs C420 M3 » Version: N/A
When used together with: Cisco » Ucs C4200 » Version: N/A
When used together with: Cisco » Ucs C460 M2 » Version: N/A
When used together with: Cisco » Ucs C460 M4 » Version: N/A
When used together with: Cisco » Ucs C480 M5 » Version: N/A
When used together with: Cisco » Ucs C480 Ml M5 » Version: N/A
When used together with: Cisco » Ucs C890 M5 » Version: N/A
Cisco » Unified Computing System
Versions before (<) 4.1\(3e\)
cpe:2.3:a:cisco:unified_computing_system:*:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Ucs S3260 » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2021-34736

EPSS FAQ

0.11%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 46 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-34736

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
5.3	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	3.9	1.4	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: Low
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2021-34736

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)

References for CVE-2021-34736

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-imc-gui-dos-TZjrFyZh

Cisco Integrated Management Controller GUI Denial of Service Vulnerability
Vendor Advisory

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Vulnerability Details : CVE-2021-34736

Products affected by CVE-2021-34736

Exploit prediction scoring system (EPSS) score for CVE-2021-34736

CVSS scores for CVE-2021-34736

CWE ids for CVE-2021-34736

References for CVE-2021-34736