CVE-2021-34778— Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabilities
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I. Basic Information for CVE-2021-34778
Vulnerability Information
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Vulnerability Title
Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabilities
Source: NVD (National Vulnerability Database)
Vulnerability Description
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker could perform the following: Execute code on the affected device or cause it to reload unexpectedly Cause LLDP database corruption on the affected device For more information about these vulnerabilities, see the Details section of this advisory. 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). Cisco has released firmware updates that address these vulnerabilities.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Small Business 220 Series Smart Switches缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Small Business 220 Series Smart Switches是美国思科（Cisco）公司的一款小型智能交换机设备。 Cisco Small Business 220 Series Smart Switches存在缓冲区错误漏洞，攻击者可利用该漏洞在受影响的设备上执行代码或导致代码意外重新加载在受影响的设备上导致LLDP数据库损坏。注：LLDP是第2层协议。要利用这些漏洞进行攻击，攻击者必须与受影响设备位于同一广播域中（第2层相邻）
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 Small Business 200 Series Smart Switches | n/a | - |
II. Public POCs for CVE-2021-34778
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|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb220-lldp-multivuls-mVRUtQ8Tvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2021-34778
Same Patch Batch · Cisco · 2021-10-06 · 23 CVEs total
| CVE-2021-34710 | 8.8 HIGH | Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities |
| CVE-2021-34735 | 8.8 HIGH | Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities |
| CVE-2021-34748 | 8.8 HIGH | Cisco Intersight Virtual Appliance Command Injection Vulnerability |
| CVE-2021-34698 | 8.6 HIGH | Cisco Web Security Appliance Proxy Service Denial of Service Vulnerability |
| CVE-2021-1594 | 7.5 HIGH | Cisco Identity Services Engine Privilege Escalation Vulnerability |
| CVE-2021-34788 | 7.0 HIGH | Cisco AnyConnect Secure Mobility Client for Linux and Mac OS with VPN Posture (HostScan) M |
| CVE-2021-34706 | 6.4 MEDIUM | Cisco Identity Services Engine XML External Entity Injection Vulnerability |
| CVE-2021-34742 | 6.1 MEDIUM | Cisco Vision Dynamic Signage Director Reflected Cross-Site Scripting Vulnerability |
| CVE-2021-1534 | 5.8 MEDIUM | Cisco Email Security Appliance URL Filtering Bypass Vulnerability |
| CVE-2021-34711 | 5.5 MEDIUM | Cisco IP Phone Software Arbitrary File Read Vulnerability |
| CVE-2021-34766 | 5.4 MEDIUM | Cisco Smart Software Manager Privilege Escalation Vulnerability |
| CVE-2021-34744 | 4.9 MEDIUM | Cisco Business 220 Series Smart Switches Static Key and Password Vulnerabilities |
| CVE-2021-34757 | 4.9 MEDIUM | Cisco Business 220 Series Smart Switches Static Key and Password Vulnerabilities |
| CVE-2021-34772 | 4.7 MEDIUM | Cisco Orbital Open Redirect Vulnerability |
| CVE-2021-34758 | 4.4 MEDIUM | Cisco TelePresence Collaboration Endpoint and RoomOS Software Denial of Service Vulnerabi |
| CVE-2021-34775 | 4.3 MEDIUM | Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti |
| CVE-2021-34776 | 4.3 MEDIUM | Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti |
| CVE-2021-34777 | 4.3 MEDIUM | Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti |
| CVE-2021-34779 | 4.3 MEDIUM | Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti |
| CVE-2021-34780 | 4.3 MEDIUM | Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabiliti |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Cisco Small Business 200 Series Smart Switches
- CVE-2021-34775
Cisco Small Business 220 Series Smart Switches Link Layer Di - CVE-2021-34776
Cisco Small Business 220 Series Smart Switches Link Layer Di - CVE-2021-34777
Cisco Small Business 220 Series Smart Switches Link Layer Di - CVE-2021-34779
Cisco Small Business 220 Series Smart Switches Link Layer Di - CVE-2021-34780
Cisco Small Business 220 Series Smart Switches Link Layer Di
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V. Comments for CVE-2021-34778
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