CVE-2021-1136— Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers Image Verification Vulnerabilities
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I. Basic Information for CVE-2021-1136
Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers Image Verification Vulnerabilities
Source: NVD (National Vulnerability Database)
Vulnerability Description
Multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for the Cisco 8000 Series Routers could allow an authenticated, local attacker to execute unsigned code during the boot process on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
密码学签名的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
多款Cisco产品数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco 8000 Series Router和Cisco Network Convergence System 540 Series Routers都是美国Cisco公司的一款路由器设备。 多款 Cisco 路由器的 Cisco IOS XR 中存在数据伪造问题漏洞。该漏洞是由于受影响的设备上的GRUB引导加载程序版本未锁定引起的。攻击者可以通过从GRUB菜单修改引导过程来利用此漏洞。成功的利用可能使攻击者绕过信任启动链。以下产品及版本受到影响：Cisco 8000 Series Router,Cis
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 IOS XR Software | n/a | - |
II. Public POCs for CVE-2021-1136
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxr-l-zNhcGCBtvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2021-1136
Same Patch Batch · Cisco · 2021-02-04 · 56 CVEs total
| CVE-2021-1289 | 9.8 CRITICAL | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Exec |
| CVE-2021-1290 | 9.8 CRITICAL | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Exec |
| CVE-2021-1291 | 9.8 CRITICAL | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Exec |
| CVE-2021-1292 | 9.8 CRITICAL | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Exec |
| CVE-2021-1293 | 9.8 CRITICAL | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Exec |
| CVE-2021-1294 | 9.8 CRITICAL | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Exec |
| CVE-2021-1295 | 9.8 CRITICAL | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Exec |
| CVE-2021-1313 | 8.6 HIGH | Cisco IOS XR Software Enf Broker Denial of Service Vulnerability |
| CVE-2021-1288 | 8.6 HIGH | Cisco IOS XR Software Enf Broker Denial of Service Vulnerability |
| CVE-2021-1297 | 7.5 HIGH | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Arbitrary File W |
| CVE-2021-1296 | 7.5 HIGH | Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Arbitrary File W |
| CVE-2021-1268 | 7.4 HIGH | Cisco IOS XR Software IPv6 Flood Denial of Service Vulnerability |
| CVE-2021-1322 | 7.2 HIGH | Cisco Small Business RV Series Routers Management Interface Remote Command Execution and D |
| CVE-2021-1330 | 7.2 HIGH | Cisco Small Business RV Series Routers Management Interface Remote Command Execution and D |
| CVE-2021-1323 | 7.2 HIGH | Cisco Small Business RV Series Routers Management Interface Remote Command Execution and D |
| CVE-2021-1324 | 7.2 HIGH | Cisco Small Business RV Series Routers Management Interface Remote Command Execution and D |
| CVE-2021-1325 | 7.2 HIGH | Cisco Small Business RV Series Routers Management Interface Remote Command Execution and D |
| CVE-2021-1329 | 7.2 HIGH | Cisco Small Business RV Series Routers Management Interface Remote Command Execution and D |
| CVE-2021-1327 | 7.2 HIGH | Cisco Small Business RV Series Routers Management Interface Remote Command Execution and D |
| CVE-2021-1326 | 7.2 HIGH | Cisco Small Business RV Series Routers Management Interface Remote Command Execution and D |
Showing top 20 of 56 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-1136
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