CVE-2024-20513 (CNNVD-202410-178)

MEDIUM
中文标题:
Cisco AnyConnect VPN 安全漏洞
英文标题:
A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Tele...
CVSS分数: 5.8
发布时间: 2024-10-02 18:23:54
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 AnyConnect VPN是美国思科（Cisco）公司的一种虚拟专用网络（VPN）客户端，它支持远程用户通过 SSL VPN 和 IPSec VPN 连接到企业网络。 Cisco AnyConnect VPN存在安全漏洞，该漏洞源于 VPN 身份验证过程中使用的处理程序的熵值较弱以及同一过程中存在的竞争条件。允许未经身份验证的远程攻击者对受影响设备上的 AnyConnect VPN 服务造成拒绝服务。

英文描述:

A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z Series Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a DoS condition for targeted users of the AnyConnect service on an affected device. This vulnerability is due to insufficient entropy for handlers that are used during SSL VPN session establishment. An unauthenticated attacker could exploit this vulnerability by brute forcing valid session handlers. An authenticated attacker could exploit this vulnerability by connecting to the AnyConnect VPN service of an affected device to retrieve a valid session handler and, based on that handler, predict further valid session handlers. The attacker would then send a crafted HTTPS request using the brute-forced or predicted session handler to the AnyConnect VPN server of the device. A successful exploit could allow the attacker to terminate targeted SSL VPN sessions, forcing remote users to initiate new VPN connections and reauthenticate.

CWE类型:
CWE-639
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 Meraki MX Firmware N/A - - cpe:2.3:a:cisco:cisco_meraki_mx_firmware:n_a:*:*:*:*:*:*:*
cisco meraki_mx65_firmware * - - cpe:2.3:o:cisco:meraki_mx65_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx64_firmware * - - cpe:2.3:o:cisco:meraki_mx64_firmware:*:*:*:*:*:*:*:*
cisco meraki_z4c_firmware * - - cpe:2.3:o:cisco:meraki_z4c_firmware:*:*:*:*:*:*:*:*
cisco meraki_z4_firmware * - - cpe:2.3:o:cisco:meraki_z4_firmware:*:*:*:*:*:*:*:*
cisco meraki_z3c_firmware * - - cpe:2.3:o:cisco:meraki_z3c_firmware:*:*:*:*:*:*:*:*
cisco meraki_z3_firmware * - - cpe:2.3:o:cisco:meraki_z3_firmware:*:*:*:*:*:*:*:*
cisco meraki_vmx_firmware * - - cpe:2.3:o:cisco:meraki_vmx_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx600_firmware * - - cpe:2.3:o:cisco:meraki_mx600_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx450_firmware * - - cpe:2.3:o:cisco:meraki_mx450_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx400_firmware * - - cpe:2.3:o:cisco:meraki_mx400_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx250_firmware * - - cpe:2.3:o:cisco:meraki_mx250_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx105_firmware * - - cpe:2.3:o:cisco:meraki_mx105_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx100_firmware * - - cpe:2.3:o:cisco:meraki_mx100_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx95_firmware * - - cpe:2.3:o:cisco:meraki_mx95_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx85_firmware * - - cpe:2.3:o:cisco:meraki_mx85_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx84_firmware * - - cpe:2.3:o:cisco:meraki_mx84_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx75_firmware * - - cpe:2.3:o:cisco:meraki_mx75_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx68w_firmware * - - cpe:2.3:o:cisco:meraki_mx68w_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx68cw_firmware * - - cpe:2.3:o:cisco:meraki_mx68cw_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx68_firmware * - - cpe:2.3:o:cisco:meraki_mx68_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx67w_firmware * - - cpe:2.3:o:cisco:meraki_mx67w_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx67c_firmware * - - cpe:2.3:o:cisco:meraki_mx67c_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx67_firmware * - - cpe:2.3:o:cisco:meraki_mx67_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx65w_firmware * - - cpe:2.3:o:cisco:meraki_mx65w_firmware:*:*:*:*:*:*:*:*
cisco meraki_mx64w_firmware * - - cpe:2.3:o:cisco:meraki_mx64w_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
cisco-sa-meraki-mx-vpn-dos-QTRHzG2 OTHER
cve.org
访问
CVSS评分详情
3.1 (cna)
MEDIUM
5.8
CVSS向量: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
机密性
NONE
完整性
NONE
可用性
LOW
时间信息
发布时间:
2024-10-02 18:23:54
修改时间:
2025-06-04 20:19:53
创建时间:
2025-11-11 15:39:03
更新时间:
2025-11-11 15:59:10
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-2024-20513 2025-11-11 15:22:24 2025-11-11 07:39:03
NVD nvd_CVE-2024-20513 2025-11-11 15:00:06 2025-11-11 07:47:05
CNNVD cnnvd_CNNVD-202410-178 2025-11-11 15:12:17 2025-11-11 07:59:10
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 15:59:10
vulnerability_type: 未提取 → 其他; cnnvd_id: 未提取 → CNNVD-202410-178; 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-202410-178
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:47:05
affected_products_count: 1 → 26; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 1 -> 26
  • data_sources: ['cve'] -> ['cve', 'nvd']