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CVE-2019-1752— Cisco IOS and IOS XE Software ISDN Interface Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco IOS and 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和IOS XE都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS和IOS XE中的ISDN功能存在输入验证漏洞，该漏洞源于程序没有正确地处理Q.931消息元素中的值。远程攻击者可利用该漏洞造成设备重新加载，导致拒绝服务。

AI Predicted 7.5 Difficulty: Moderate EPSS 2.52% · P84

Possible ATT&CK Techniques 1 AI

T1027 · Obfuscated Files or Information
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I. Basic Information for CVE-2019-1752

Vulnerability Information
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Vulnerability Title
Cisco IOS and IOS XE Software ISDN Interface Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the ISDN functions of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of specific values in the Q.931 information elements. An attacker could exploit this vulnerability by calling the affected device with specific Q.931 information elements being present. An exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.
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和IOS XE 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS和IOS XE都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS和IOS XE中的ISDN功能存在输入验证漏洞，该漏洞源于程序没有正确地处理Q.931消息元素中的值。远程攻击者可利用该漏洞造成设备重新加载，导致拒绝服务。
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 and IOS XE Software 3.8.0S -

II. Public POCs for CVE-2019-1752

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III. Intelligence Information for CVE-2019-1752

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Vendor Advisories for CVE-2019-1752 (2)

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

CVE-2019-1751 Cisco IOS Software NAT64 Denial of Service Vulnerability
CVE-2019-1753 Cisco IOS XE Software Privilege Escalation Vulnerability
CVE-2019-1756 Cisco IOS XE Software Command Injection 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 and IOS XE Software
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2019-1752

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