CVE-2021-34793 (CNNVD-202110-1922)

HIGH
中文标题:
Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Software） 安全漏洞
英文标题:
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Transparent Mode Denial of Service Vulnerability
CVSS分数: 8.6
发布时间: 2021-10-27 18:56:26
漏洞类型: 其他
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 Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Software） 存在安全漏洞，该漏洞源于受影响设备在透明模式下运行时，某些TCP段处理错误造成的。攻击者可利用该漏洞毒害MAC地址表，从而导致拒绝服务(DoS)漏洞。

英文描述:

A vulnerability in the TCP Normalizer of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software operating in transparent mode could allow an unauthenticated, remote attacker to poison MAC address tables, resulting in a denial of service (DoS) vulnerability. This vulnerability is due to incorrect handling of certain TCP segments when the affected device is operating in transparent mode. An attacker could exploit this vulnerability by sending a crafted TCP segment through an affected device. A successful exploit could allow the attacker to poison the MAC address tables in adjacent devices, resulting in network disruption.

CWE类型:
CWE-924
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 Adaptive Security Appliance (ASA) Software n/a - - cpe:2.3:a:cisco:cisco_adaptive_security_appliance_(asa)_software:n_a:*:*:*:*:*:*:*
cisco adaptive_security_appliance * - - cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:*
cisco firepower_threat_defense * - - cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
cisco adaptive_security_appliance_software * - - cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco asa_5512-x_firmware 009.008\(004.025\) - - cpe:2.3:o:cisco:asa_5512-x_firmware:009.008\(004.025\):*:*:*:*:*:*:*
cisco asa_5505_firmware 009.008\(004.025\) - - cpe:2.3:o:cisco:asa_5505_firmware:009.008\(004.025\):*:*:*:*:*:*:*
cisco asa_5515-x_firmware 009.008\(004.025\) - - cpe:2.3:o:cisco:asa_5515-x_firmware:009.008\(004.025\):*:*:*:*:*:*:*
cisco asa_5525-x_firmware 009.008\(004.025\) - - cpe:2.3:o:cisco:asa_5525-x_firmware:009.008\(004.025\):*:*:*:*:*:*:*
cisco asa_5545-x_firmware 009.008\(004.025\) - - cpe:2.3:o:cisco:asa_5545-x_firmware:009.008\(004.025\):*:*:*:*:*:*:*
cisco asa_5555-x_firmware 009.008\(004.025\) - - cpe:2.3:o:cisco:asa_5555-x_firmware:009.008\(004.025\):*:*:*:*:*:*:*
cisco asa_5580_firmware 009.008\(004.025\) - - cpe:2.3:o:cisco:asa_5580_firmware:009.008\(004.025\):*:*:*:*:*:*:*
cisco asa_5585-x_firmware 009.008\(004.025\) - - cpe:2.3:o:cisco:asa_5585-x_firmware:009.008\(004.025\):*:*:*:*:*:*:*
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
20211027 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Transparent Mode Denial of Service Vulnerability vendor-advisory
cve.org
访问
CVSS评分详情
3.1 (cna)
HIGH
8.6
CVSS向量: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
机密性
NONE
完整性
NONE
可用性
HIGH
时间信息
发布时间:
2021-10-27 18:56:26
修改时间:
2024-11-07 21:45:43
创建时间:
2025-11-11 15:36:55
更新时间:
2025-11-11 15:56:57
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-2021-34793 2025-11-11 15:21:00 2025-11-11 07:36:55
NVD nvd_CVE-2021-34793 2025-11-11 14:57:44 2025-11-11 07:45:13
CNNVD cnnvd_CNNVD-202110-1922 2025-11-11 15:10:45 2025-11-11 07:56:57
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 15:56:57
vulnerability_type: 未提取 → 其他; cnnvd_id: 未提取 → CNNVD-202110-1922; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 其他
  • cnnvd_id: 未提取 -> CNNVD-202110-1922
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:45:13
affected_products_count: 1 → 12; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 1 -> 12
  • data_sources: ['cve'] -> ['cve', 'nvd']