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CVE-2021-34736— Cisco Integrated Management Controller GUI Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco Unified Computing System (Managed)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Integrated Management Controller（IMC）是美国思科（Cisco）公司的一套用于对UCS（统一计算系统）进行管理的软件。该软件支持HTTP、SSH访问等，并可对服务器进行开机、关机和重启等操作。 Cisco Integrated Management Controller (IMC) 存在输入验证错误漏洞，该漏洞源于web管理界面的输入验证不足造成的。攻击者可利用该漏洞重新启动接口，从而导致拒绝服务(DoS)状态。

CVSS 5.3 · Medium EPSS 1.27% · P69

Possible ATT&CK Techniques 1 AI

T1499.002 · Service Exhaustion Flood
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I. Basic Information for CVE-2021-34736

Vulnerability Information
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Vulnerability Title
Cisco Integrated Management Controller GUI Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Integrated Management Controller 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Integrated Management Controller（IMC）是美国思科（Cisco）公司的一套用于对UCS（统一计算系统）进行管理的软件。该软件支持HTTP、SSH访问等，并可对服务器进行开机、关机和重启等操作。 Cisco Integrated Management Controller (IMC) 存在输入验证错误漏洞，该漏洞源于web管理界面的输入验证不足造成的。攻击者可利用该漏洞重新启动接口，从而导致拒绝服务(DoS)状态。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Unified Computing System (Managed) n/a -

II. Public POCs for CVE-2021-34736

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III. Intelligence Information for CVE-2021-34736

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Vendor Advisories for CVE-2021-34736 (1)

Same Patch Batch · Cisco · 2021-10-21 · 9 CVEs total

CVE-2021-1529 7.8 HIGH Cisco IOS XE SD-WAN Software Command Injection Vulnerability
CVE-2021-40121 6.1 MEDIUM Cisco Identity Services Engine Cross-Site Scripting Vulnerabilities
CVE-2021-34738 6.1 MEDIUM Cisco Identity Services Engine Cross-Site Scripting Vulnerabilities
CVE-2021-40122 5.9 MEDIUM Cisco Meeting Server Call Bridge Denial of Service Vulnerability
CVE-2021-34789 4.8 MEDIUM Cisco Tetration Stored Cross-Site Scripting Vulnerability
CVE-2021-40123 4.3 MEDIUM Cisco Identity Services Engine File Download Vulnerability
CVE-2021-34743 4.3 MEDIUM Cisco Webex Software Application Authorization Bypass Vulnerability
CVE-2021-34760 Cisco TelePresence Management Suite Stored Cross-Site Scripting Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Unified Computing System (Managed)
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2021-34736

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