CVE-2019-25600— UltraVNC Viewer 1.2.2.4 Denial of Service via Buffer Overflow
Quick assessment
Affected
Uvnc UltraVNC Viewer
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.
UltraVNC Viewer是UltraVNC公司的一个远程桌面客户端。 UltraVNC Viewer 1.2.2.4版本存在缓冲区错误漏洞，该漏洞源于VNC Server输入字段存在拒绝服务，可能导致攻击者通过提供超大字符串使应用程序崩溃。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2019-25600
Vulnerability Information
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Vulnerability Title
UltraVNC Viewer 1.2.2.4 Denial of Service via Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
UltraVNC Viewer 1.2.2.4 contains a denial of service vulnerability that allows attackers to crash the application by supplying an oversized string to the VNC Server input field. Attackers can paste a malicious string containing 256 repeated characters into the VNC Server field and click Connect to trigger a buffer overflow that crashes the viewer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
UltraVNC Viewer 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
UltraVNC Viewer是UltraVNC公司的一个远程桌面客户端。 UltraVNC Viewer 1.2.2.4版本存在缓冲区错误漏洞，该漏洞源于VNC Server输入字段存在拒绝服务，可能导致攻击者通过提供超大字符串使应用程序崩溃。
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 |
|---|---|---|---|---|
| Uvnc | UltraVNC Viewer | 1.2.2.4 | - |
|
II. Public POCs for CVE-2019-25600
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2019-25600 (1)
Exploits & Public PoCs for CVE-2019-25600 (1)
Vendor Pages for CVE-2019-25600 (1)
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V. Comments for CVE-2019-25600
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