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CVE-2021-1596— Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak Vulnerabilities

Quick assessment

Affected
Cisco Cisco Video Surveillance 7000 Series IP Cameras
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 Video Surveillance 7000 Series IP Cameras是美国思科（Cisco）公司的网络设备一款视频监控摄像头。 Cisco Video Surveillance 7000 Series IP Cameras存在安全漏洞，该漏洞源于链路层发现协议 (LLDP) 中存在多个漏洞。成功的利用可能使设备持续消耗内存，这可能导致设备崩溃并重新加载，从而导致DoS。

CVSS 6.5 · Medium EPSS 0.38% · P30
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I. Basic Information for CVE-2021-1596

Vulnerability Information
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Vulnerability Title
Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Video Surveillance 7000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause a memory leak, which could lead to a denial of service (DoS) condition on an affected device. These vulnerabilities are due to incorrect processing of certain LLDP packets at ingress time. An attacker could exploit these vulnerabilities by sending crafted LLDP packets to an affected device. A successful exploit could allow the attacker to cause the affected device to continuously consume memory, which could cause the device to crash and reload, resulting in a DoS condition. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在移除最后引用时对内存的释放不恰当(内存泄露)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Video Surveillance 7000 Series IP Cameras 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Video Surveillance 7000 Series IP Cameras是美国思科（Cisco）公司的网络设备一款视频监控摄像头。 Cisco Video Surveillance 7000 Series IP Cameras存在安全漏洞，该漏洞源于链路层发现协议 (LLDP) 中存在多个漏洞。成功的利用可能使设备持续消耗内存，这可能导致设备崩溃并重新加载，从而导致DoS。
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 Video Surveillance 7000 Series IP Cameras n/a -

II. Public POCs for CVE-2021-1596

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III. Intelligence Information for CVE-2021-1596

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Vendor Advisories for CVE-2021-1596 (1)

Same Patch Batch · Cisco · 2021-07-08 · 15 CVEs total

CVE-2021-1576 8.8 HIGH Cisco Business Process Automation Privilege Escalation Vulnerabilities
CVE-2021-1574 8.8 HIGH Cisco Business Process Automation Privilege Escalation Vulnerabilities
CVE-2021-1585 7.5 HIGH Cisco Adaptive Security Device Manager Remote Code Execution Vulnerability
CVE-2021-1598 6.5 MEDIUM Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak
CVE-2021-1597 6.5 MEDIUM Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak
CVE-2021-1595 6.5 MEDIUM Cisco Video Surveillance 7000 Series IP Cameras Link Layer Discovery Protocol Memory Leak
CVE-2021-1359 6.3 MEDIUM Cisco Web Security Appliance Privilege Escalation Vulnerability
CVE-2021-1575 6.1 MEDIUM Cisco Virtualized Voice Browser Cross-Site Scripting Vulnerability
CVE-2021-1607 4.8 MEDIUM Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities
CVE-2021-1606 4.8 MEDIUM Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities
CVE-2021-1605 4.8 MEDIUM Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities
CVE-2021-1604 4.8 MEDIUM Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities
CVE-2021-1603 4.8 MEDIUM Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities
CVE-2021-1562 4.3 MEDIUM Cisco BroadWorks Application Server Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Video Surveillance 7000 Series IP Cameras
Same vendor: Cisco
Same weakness: CWE-401

V. Comments for CVE-2021-1596

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