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CVE-2019-1855— Cisco Jabber for Windows DLL Preloading Vulnerability

Quick assessment

Affected
Cisco Cisco Jabber for Windows
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 Jabber for Windows是美国思科（Cisco）公司的一套用于Windows平台的统一通信客户端解决方案。该方案提供了在线状态显示、即时消息、语音等功能。 Cisco Jabber for Windows 12.6(0)之前版本中的加载机制存在代码问题漏洞，该漏洞源于在运行时，程序没有充分地验证该应用程序所加载的资源。本地攻击者可借助恶意的DLL文件利用该漏洞以其他用户权限在目标设备上执行任意代码。

AI Predicted 7.8 Difficulty: Easy EPSS 2.26% · P82
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I. Basic Information for CVE-2019-1855

Vulnerability Information
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Vulnerability Title
Cisco Jabber for Windows DLL Preloading Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the loading mechanism of specific dynamic link libraries in Cisco Jabber for Windows could allow an authenticated, local attacker to perform a DLL preloading attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of the resources loaded by the application at run time. An attacker could exploit this vulnerability by crafting a malicious DLL file and placing it in a specific location on the targeted system. The malicious DLL file would execute when the Jabber application launches. A successful exploit could allow the attacker to execute arbitrary code on the target machine with the privileges of another user's account.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
权限、特权和访问控制
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Jabber for Windows 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Jabber for Windows是美国思科（Cisco）公司的一套用于Windows平台的统一通信客户端解决方案。该方案提供了在线状态显示、即时消息、语音等功能。 Cisco Jabber for Windows 12.6(0)之前版本中的加载机制存在代码问题漏洞，该漏洞源于在运行时，程序没有充分地验证该应用程序所加载的资源。本地攻击者可借助恶意的DLL文件利用该漏洞以其他用户权限在目标设备上执行任意代码。
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 Jabber for Windows unspecified ~ 12.6(0) -

II. Public POCs for CVE-2019-1855

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III. Intelligence Information for CVE-2019-1855

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Vendor Advisories for CVE-2019-1855 (2)

Same Patch Batch · Cisco · 2019-07-04 · 5 CVEs total

CVE-2019-1890 Cisco Nexus 9000 Series Fabric Switches ACI Mode Fabric Infrastructure VLAN Unauthorized A
CVE-2019-1889 Cisco Application Policy Infrastructure Controller REST API Privilege Escalation Vulnerabi
CVE-2019-1884 Cisco Web Security Appliance Web Proxy Denial of Service Vulnerability
CVE-2019-1886 Cisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability

IV. Related Vulnerabilities

Same vendor: Cisco
Same weakness: CWE-264

V. Comments for CVE-2019-1855

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