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CVE-2019-1756— Cisco IOS XE Software Command Injection Vulnerability

Quick assessment

Affected
Cisco Cisco IOS XE 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 XE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 XE中存在输入验证漏洞，该漏洞源于程序没有正确地过滤用户提交的输入。当Web服务器功能被启用时，攻击者可通过提交带有恶意payload的用户名利用该漏洞以root用户身份执行任意命令。

AI Predicted 9.8 Difficulty: Easy EPSS 3.70% · P89

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell
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I. Basic Information for CVE-2019-1756

Vulnerability Information
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Vulnerability Title
Cisco IOS XE Software Command Injection Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in Cisco IOS XE Software could allow an authenticated, remote attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability occurs because the affected software improperly sanitizes user-supplied input. An attacker who has valid administrator access to an affected device could exploit this vulnerability by supplying a username with a malicious payload in the web UI and subsequently making a request to a specific endpoint in the web UI. A successful exploit could allow the attacker to run arbitrary commands as the root user, allowing complete compromise of the system.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE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 XE中存在输入验证漏洞，该漏洞源于程序没有正确地过滤用户提交的输入。当Web服务器功能被启用时，攻击者可通过提交带有恶意payload的用户名利用该漏洞以root用户身份执行任意命令。
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 XE Software 3.2.0JA -

II. Public POCs for CVE-2019-1756

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III. Intelligence Information for CVE-2019-1756

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Vendor Advisories for CVE-2019-1756 (2)

Same Patch Batch · Cisco · 2019-03-28 · 12 CVEs total

CVE-2019-1751 Cisco IOS Software NAT64 Denial of Service Vulnerability
CVE-2019-1752 Cisco IOS and IOS XE Software ISDN Interface Denial of Service Vulnerability
CVE-2019-1753 Cisco IOS XE Software Privilege Escalation Vulnerability
CVE-2019-1755 Cisco IOS XE Software Command Injection Vulnerability
CVE-2019-1754 Cisco IOS XE Software Privilege Escalation Vulnerability
CVE-2019-1758 Cisco IOS Software Catalyst 6500 Series 802.1x Authentication Bypass Vulnerability
CVE-2019-1757 Cisco IOS and IOS XE Software Smart Call Home Certificate Validation Vulnerability
CVE-2019-1761 Cisco IOS and IOS XE Software Hot Standby Router Protocol Information Leak Vulnerability
CVE-2019-1760 Cisco IOS XE Software Performance Routing Version 3 Denial of Service Vulnerability
CVE-2019-1759 Cisco IOS XE Software Gigabit Ethernet Management Interface Access Control List Bypass Vul
CVE-2019-1762 Cisco IOS and IOS XE Software Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2019-1756

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