TI-2018-14301 Aliases CVE-2018-20179 GHSA-4q64-7w7g-5x5w

rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a…

MEDIUM 52CWE-191Published 2019-03-15 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Will not fix Red Hat: no fix planned

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-191 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.06795 94th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Will not fix Red Hat: no fix planned

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:rdesktop:rdesktop::::::::	up to 1.8.3	Vulnerable	rdesktop

cpe:2.3:a:rdesktop:rdesktop:*:*:*:*:*:*:*:* Versions up to 1.8.3 Vulnerable ·rdesktop

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 5	Affected	No fix planned: Will not fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Will not fix

Timeline

2026-10-02 Threatist record created from CVE-2018-20179
2026-10-03 Alias added: GHSA-4q64-7w7g-5x5w

References

Exploit 1

https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/

Patch 1

https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1

Advisory 3

Other 1

[debian-lts-announce] 20190219 [SECURITY] [DLA 1683-1] rdesktop security update

TI-2008-01728 Integer underflow in the iso_recv_msg function (iso.c) in rdesktop 1.5.0 allows remote… CVSS 2.0HIGH 9.3
TI-2008-01729 Buffer overflow in the process_redirect_pdu (rdp.c) function in rdesktop 1.5.0 allows… CVSS 2.0HIGH 9.3
TI-2018-14304 rdesktop versions up to and including v1.8.3 contain a Buffer Overflow over the global… CVSS 3.0CRITICAL 9.8
TI-2018-14303 rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a… CVSS 3.0CRITICAL 9.8
TI-2018-14302 rdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a… CVSS 3.0CRITICAL 9.8
TI-2018-14299 rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a… CVSS 3.1CRITICAL 9.8

See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences