CVE-2021-34778 (CNNVD-202110-301)

MEDIUM
中文标题:
Cisco Small Business 220 Series Smart Switches缓冲区错误漏洞
英文标题:
Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabilities
CVSS分数: 4.3
发布时间: 2021-10-06 19:45:27
漏洞类型: 缓冲区错误
状态: PUBLISHED
数据质量分数: 0.30
数据版本: v3
漏洞描述
中文描述:

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）

英文描述:

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.

CWE类型:
CWE-120
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
Cisco Cisco Small Business 200 Series Smart Switches n/a - - cpe:2.3:a:cisco:cisco_small_business_200_series_smart_switches:n_a:*:*:*:*:*:*:*
cisco business_220-8t-e-2g_firmware * - - cpe:2.3:o:cisco:business_220-8t-e-2g_firmware:*:*:*:*:*:*:*:*
cisco business_220-8p-e-2g_firmware * - - cpe:2.3:o:cisco:business_220-8p-e-2g_firmware:*:*:*:*:*:*:*:*
cisco business_220-8fp-e-2g_firmware * - - cpe:2.3:o:cisco:business_220-8fp-e-2g_firmware:*:*:*:*:*:*:*:*
cisco business_220-16t-2g_firmware * - - cpe:2.3:o:cisco:business_220-16t-2g_firmware:*:*:*:*:*:*:*:*
cisco business_220-16p-2g_firmware * - - cpe:2.3:o:cisco:business_220-16p-2g_firmware:*:*:*:*:*:*:*:*
cisco business_220-24t-4g_firmware * - - cpe:2.3:o:cisco:business_220-24t-4g_firmware:*:*:*:*:*:*:*:*
cisco business_220-24p-4g_firmware * - - cpe:2.3:o:cisco:business_220-24p-4g_firmware:*:*:*:*:*:*:*:*
cisco business_220-24fp-4g_firmware * - - cpe:2.3:o:cisco:business_220-24fp-4g_firmware:*:*:*:*:*:*:*:*
cisco business_220-48t-4g_firmware * - - cpe:2.3:o:cisco:business_220-48t-4g_firmware:*:*:*:*:*:*:*:*
cisco business_220-48p-4g_firmware * - - cpe:2.3:o:cisco:business_220-48p-4g_firmware:*:*:*:*:*:*:*:*
cisco business_220-24t-4x_firmware * - - cpe:2.3:o:cisco:business_220-24t-4x_firmware:*:*:*:*:*:*:*:*
cisco business_220-24p-4x_firmware * - - cpe:2.3:o:cisco:business_220-24p-4x_firmware:*:*:*:*:*:*:*:*
cisco business_220-24fp-4x_firmware * - - cpe:2.3:o:cisco:business_220-24fp-4x_firmware:*:*:*:*:*:*:*:*
cisco business_220-48t-4x_firmware * - - cpe:2.3:o:cisco:business_220-48t-4x_firmware:*:*:*:*:*:*:*:*
cisco business_220-48p-4x_firmware * - - cpe:2.3:o:cisco:business_220-48p-4x_firmware:*:*:*:*:*:*:*:*
cisco business_220-48fp-4x_firmware * - - cpe:2.3:o:cisco:business_220-48fp-4x_firmware:*:*:*:*:*:*:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
20211006 Cisco Small Business 220 Series Smart Switches Link Layer Discovery Protocol Vulnerabilities vendor-advisory
cve.org
访问
CVSS评分详情
3.1 (cna)
MEDIUM
4.3
CVSS向量: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
机密性
NONE
完整性
LOW
可用性
NONE
时间信息
发布时间:
2021-10-06 19:45:27
修改时间:
2024-11-07 21:49:51
创建时间:
2025-11-11 15:36:55
更新时间:
2025-11-11 15:56:58
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2021-34778 2025-11-11 15:21:00 2025-11-11 07:36:55
NVD nvd_CVE-2021-34778 2025-11-11 14:57:43 2025-11-11 07:45:13
CNNVD cnnvd_CNNVD-202110-301 2025-11-11 15:10:44 2025-11-11 07:56:58
版本与语言
当前版本: v3
主要语言: EN
支持语言:
EN ZH
安全公告
暂无安全公告信息
变更历史
v3 CNNVD
2025-11-11 15:56:58
vulnerability_type: 未提取 → 缓冲区错误; cnnvd_id: 未提取 → CNNVD-202110-301; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 缓冲区错误
  • cnnvd_id: 未提取 -> CNNVD-202110-301
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:45:13
affected_products_count: 1 → 17; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 1 -> 17
  • data_sources: ['cve'] -> ['cve', 'nvd']