CVE-2020-3284 (CNNVD-202011-343)

HIGH
中文标题:
Cisco IOS XR 访问控制错误漏洞
英文标题:
Cisco IOS XR Software Enhanced Preboot eXecution Environment Unsigned Code Execution Vulnerability
CVSS分数: 8.1
发布时间: 2020-11-06 18:16:03
漏洞类型: 授权问题
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 IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR 64-bit Preboot eXecution Environment 存在访问控制错误漏洞，该漏洞使攻击者可以通过Cisco IOS XR 64位的Preboot eXecution Environment绕过限制，以提升其特权

英文描述:

A vulnerability in the enhanced Preboot eXecution Environment (PXE) boot loader for Cisco IOS XR 64-bit Software could allow an unauthenticated, remote attacker to execute unsigned code during the PXE boot process on an affected device. The PXE boot loader is part of the BIOS and runs over the management interface of hardware platforms that are running Cisco IOS XR Software only. The vulnerability exists because internal commands that are issued when the PXE network boot process is loading a software image are not properly verified. An attacker could exploit this vulnerability by compromising the PXE boot server and replacing a valid software image with a malicious one. Alternatively, the attacker could impersonate the PXE boot server and send a PXE boot reply with a malicious file. A successful exploit could allow the attacker to execute unsigned code on the affected device. Note: To fix this vulnerability, both the Cisco IOS XR Software and the BIOS must be upgraded. The BIOS code is included in Cisco IOS XR Software but might require additional installation steps. For further information, see the Fixed Software section of this advisory.

CWE类型:
CWE-284
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 IOS XR Software n/a - - cpe:2.3:a:cisco:cisco_ios_xr_software:n_a:*:*:*:*:*:*:*
cisco a9k-rsp880-se_firmware * - - cpe:2.3:o:cisco:a9k-rsp880-se_firmware:*:*:*:*:*:*:*:*
cisco ios_xr * - - cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*
cisco a9k-rsp880-tr_firmware * - - cpe:2.3:o:cisco:a9k-rsp880-tr_firmware:*:*:*:*:*:*:*:*
cisco a99-rp2-se_firmware * - - cpe:2.3:o:cisco:a99-rp2-se_firmware:*:*:*:*:*:*:*:*
cisco a99-rp2-tr_firmware * - - cpe:2.3:o:cisco:a99-rp2-tr_firmware:*:*:*:*:*:*:*:*
cisco a99-rsp-se_firmware * - - cpe:2.3:o:cisco:a99-rsp-se_firmware:*:*:*:*:*:*:*:*
cisco a99-rsp-tr_firmware * - - cpe:2.3:o:cisco:a99-rsp-tr_firmware:*:*:*:*:*:*:*:*
cisco a9k-rsp880-lt-se_firmware * - - cpe:2.3:o:cisco:a9k-rsp880-lt-se_firmware:*:*:*:*:*:*:*:*
cisco a9k-rsp880-lt-tr_firmware * - - cpe:2.3:o:cisco:a9k-rsp880-lt-tr_firmware:*:*:*:*:*:*:*:*
cisco asr-9901-rp_firmware * - - cpe:2.3:o:cisco:asr-9901-rp_firmware:*:*:*:*:*:*:*:*
cisco a99-rp3-se_firmware * - - cpe:2.3:o:cisco:a99-rp3-se_firmware:*:*:*:*:*:*:*:*
cisco a99-rp3-tr_firmware * - - cpe:2.3:o:cisco:a99-rp3-tr_firmware:*:*:*:*:*:*:*:*
cisco a9k-rsp5-se_firmware * - - cpe:2.3:o:cisco:a9k-rsp5-se_firmware:*:*:*:*:*:*:*:*
cisco a9k-rsp5-tr_firmware * - - cpe:2.3:o:cisco:a9k-rsp5-tr_firmware:*:*:*:*:*:*:*:*
cisco ncs1001_firmware * - - cpe:2.3:o:cisco:ncs1001_firmware:*:*:*:*:*:*:*:*
cisco ncs1002_firmware * - - cpe:2.3:o:cisco:ncs1002_firmware:*:*:*:*:*:*:*:*
cisco ncs1004_firmware * - - cpe:2.3:o:cisco:ncs1004_firmware:*:*:*:*:*:*:*:*
cisco n540-12z20g-sys-a\/d_firmware * - - cpe:2.3:o:cisco:n540-12z20g-sys-a\/d_firmware:*:*:*:*:*:*:*:*
cisco n540-24z8q2c-m_firmware * - - cpe:2.3:o:cisco:n540-24z8q2c-m_firmware:*:*:*:*:*:*:*:*
cisco n540-28z4c-sys-a\/d_firmware * - - cpe:2.3:o:cisco:n540-28z4c-sys-a\/d_firmware:*:*:*:*:*:*:*:*
cisco n540-acc-sys_firmware * - - cpe:2.3:o:cisco:n540-acc-sys_firmware:*:*:*:*:*:*:*:*
cisco n540x-16z4g8q2c-a\/d_firmware * - - cpe:2.3:o:cisco:n540x-16z4g8q2c-a\/d_firmware:*:*:*:*:*:*:*:*
cisco n540x-12z16g-sys-a\/d_firmware * - - cpe:2.3:o:cisco:n540x-12z16g-sys-a\/d_firmware:*:*:*:*:*:*:*:*
cisco n560-4-sys_firmware * - - cpe:2.3:o:cisco:n560-4-sys_firmware:*:*:*:*:*:*:*:*
cisco n560-7-sys_firmware * - - cpe:2.3:o:cisco:n560-7-sys_firmware:*:*:*:*:*:*:*:*
cisco ncs5001_firmware * - - cpe:2.3:o:cisco:ncs5001_firmware:*:*:*:*:*:*:*:*
cisco ncs5002_firmware * - - cpe:2.3:o:cisco:ncs5002_firmware:*:*:*:*:*:*:*:*
cisco ncs5011_firmware * - - cpe:2.3:o:cisco:ncs5011_firmware:*:*:*:*:*:*:*:*
cisco nc55-rp_firmware * - - cpe:2.3:o:cisco:nc55-rp_firmware:*:*:*:*:*:*:*:*
cisco nc55-rp-e_firmware * - - cpe:2.3:o:cisco:nc55-rp-e_firmware:*:*:*:*:*:*:*:*
cisco ncs-5501_firmware * - - cpe:2.3:o:cisco:ncs-5501_firmware:*:*:*:*:*:*:*:*
cisco ncs-5501-se_firmware * - - cpe:2.3:o:cisco:ncs-5501-se_firmware:*:*:*:*:*:*:*:*
cisco ncs-5502_firmware * - - cpe:2.3:o:cisco:ncs-5502_firmware:*:*:*:*:*:*:*:*
cisco ncs-5502-se_firmware * - - cpe:2.3:o:cisco:ncs-5502-se_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a2-mod-s_firmware * - - cpe:2.3:o:cisco:ncs-55a2-mod-s_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a2-mod-hd-s_firmware * - - cpe:2.3:o:cisco:ncs-55a2-mod-hd-s_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a2-mod-hx-s_firmware * - - cpe:2.3:o:cisco:ncs-55a2-mod-hx-s_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a2-mod-se-s_firmware * - - cpe:2.3:o:cisco:ncs-55a2-mod-se-s_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a2-mod-se-h-s_firmware * - - cpe:2.3:o:cisco:ncs-55a2-mod-se-h-s_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a1-36h-se-s_firmware * - - cpe:2.3:o:cisco:ncs-55a1-36h-se-s_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a1-36h-s_firmware * - - cpe:2.3:o:cisco:ncs-55a1-36h-s_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a1-24h_firmware * - - cpe:2.3:o:cisco:ncs-55a1-24h_firmware:*:*:*:*:*:*:*:*
cisco ncs55-a1-48q6h_firmware * - - cpe:2.3:o:cisco:ncs55-a1-48q6h_firmware:*:*:*:*:*:*:*:*
cisco ncs-55a1-24q6h-s_firmware * - - cpe:2.3:o:cisco:ncs-55a1-24q6h-s_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
20201104 Cisco IOS XR Software Enhanced Preboot eXecution Environment Unsigned Code Execution Vulnerability vendor-advisory
cve.org
访问
CVSS评分详情
3.0 (cna)
HIGH
8.1
CVSS向量: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
机密性
HIGH
完整性
HIGH
可用性
HIGH
时间信息
发布时间:
2020-11-06 18:16:03
修改时间:
2024-11-13 17:43:58
创建时间:
2025-11-11 15:36:18
更新时间:
2025-11-11 15:56:31
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-2020-3284 2025-11-11 15:20:37 2025-11-11 07:36:18
NVD nvd_CVE-2020-3284 2025-11-11 14:57:05 2025-11-11 07:44:43
CNNVD cnnvd_CNNVD-202011-343 2025-11-11 15:10:31 2025-11-11 07:56:31
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 15:56:31
vulnerability_type: 未提取 → 授权问题; cnnvd_id: 未提取 → CNNVD-202011-343; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 授权问题
  • cnnvd_id: 未提取 -> CNNVD-202011-343
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2025-11-11 15:44:43
affected_products_count: 1 → 45; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 1 -> 45
  • data_sources: ['cve'] -> ['cve', 'nvd']