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Vulnerability record · CVE-2018-20179 · published 15 March 2019

CVE-2018-20179: Rdesktop vulnerability

Rdesktop · Rdesktop

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.

9.8 CVSS 3.0 Critical EPSS 6.8% · top 6.2% CWE-191 · CWE-191
9.8CVSS 3.0 base score, v2 7.5
6.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-20177Rdesktop integer overflow vulnerabilityrdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in the function rdp_in_unistr() a…EPSS 7.9%9.8CVE-2018-20180Rdesktop vulnerabilityrdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in the function rdpsnddbg_proces…EPSS 8.2%9.8CVE-2018-20181Rdesktop out-of-bounds write vulnerabilityrdesktop versions up to and including v1.8.3 contain an Integer Underflow that leads to a Heap-Based Buffer Overflow in the function seamless_process…EPSS 8.2%9.8CVE-2018-20182Rdesktop memory buffer overflow vulnerabilityrdesktop versions up to and including v1.8.3 contain a Buffer Overflow over the global variables in the function seamless_process_line() that results…EPSS 8.2%9.8CVE-2018-8793Rdesktop heap-based buffer overflow vulnerabilityrdesktop versions up to and including v1.8.3 contain a Heap-Based Buffer Overflow in function cssp_read_tsrequest() that results in a memory corrupti…EPSS 7.1%9.8CVE-2018-8794Rdesktop integer overflow vulnerabilityrdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to an Out-Of-Bounds Write in function process_bitmap_updates() an…EPSS 6.7%9.8CVE-2018-8795Rdesktop integer overflow vulnerabilityrdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in function process_bitmap_update…EPSS 7.4%9.8CVE-2018-8797Rdesktop heap-based buffer overflow vulnerabilityrdesktop versions up to and including v1.8.3 contain a Heap-Based Buffer Overflow in function process_plane() that results in a memory corruption and…EPSS 7.1%

Source: NIST National Vulnerability Database (record CVE-2018-20179), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.