Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2021-34728— Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities

Quick assessment

Affected
Cisco Cisco IOS XR Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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软件CLI存在操作系统命令注入漏洞，该漏洞源于对用户提供的命令输入验证不足。攻击者可利用该漏洞通过在提示符处使用精心编制的命令来提升受影响设备上的权限

CVSS 7.8 · High EPSS 0.30% · P23
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-34728

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker with a low-privileged account to elevate privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XR 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
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软件CLI存在操作系统命令注入漏洞，该漏洞源于对用户提供的命令输入验证不足。攻击者可利用该漏洞通过在提示符处使用精心编制的命令来提升受影响设备上的权限
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-2021-34728

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-34728

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-34728 (1)

Same Patch Batch · Cisco · 2021-09-09 · 13 CVEs total

CVE-2021-34720 8.6 HIGH Cisco IOS XR Software IP Service Level Agreements and Two-Way Active Measurement Protocol
CVE-2021-34718 8.1 HIGH Cisco IOS XR Software Arbitrary File Read and Write Vulnerability
CVE-2021-34719 7.8 HIGH Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities
CVE-2021-34713 7.4 HIGH Cisco IOS XR Software for ASR 9000 Series Routers Denial of Service Vulnerability
CVE-2021-34722 6.7 MEDIUM Cisco IOS XR Software Command Injection Vulnerabilities
CVE-2021-34721 6.7 MEDIUM Cisco IOS XR Software Command Injection Vulnerabilities
CVE-2021-34786 6.5 MEDIUM Cisco BroadWorks CommPilot Application Software Vulnerabilities
CVE-2021-34785 6.5 MEDIUM Cisco BroadWorks CommPilot Application Software Vulnerabilities
CVE-2021-34709 6.0 MEDIUM Cisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Ima
CVE-2021-34708 6.0 MEDIUM Cisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Ima
CVE-2021-34737 5.8 MEDIUM Cisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability
CVE-2021-34771 5.5 MEDIUM Cisco IOS XR Software Unauthorized Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-78

V. Comments for CVE-2021-34728

No comments yet

Leave a comment