PT-2019-1918 · Rdesktop+2 · Rdesktop+2

Eyal Itkin · Published 2019-01-16 · Updated 2024-06-15 · CVE-2018-20181

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions rdesktop versions up to and including v1.8.3

Description The issue is related to an integer underflow in the seamless process() function, leading to a heap-based buffer overflow. This results in memory corruption and potentially allows for remote code execution. The vulnerability can be exploited by a remote attacker to execute arbitrary code.

Recommendations For rdesktop versions up to and including v1.8.3, consider disabling the seamless process() function as a temporary workaround until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Integer Underflow

Memory Corruption

Weakness Enumeration

CWE-191

CWE-787

Related Identifiers

ALT-PU-2019-2898

ALT-PU-2020-1636

BDU:2019-01586

CVE-2018-20181

DLA-1683-1

DSA-4394-1

MGASA-2019-0041

OPENSUSE-SU-2019:2135-1

OPENSUSE-SU-2019_2135-1

OPENSUSE-SU-2024:11298-1

Affected Products

Alt Linux

Suse

Rdesktop

References · 51

• 🔥 https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients · Exploit
• https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1 · Patch
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:2135-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20181 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0041.html · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-20181 · Security Note
• https://osv.dev/vulnerability/MGASA-2019-0041 · Vendor Advisory
• https://debian.org/security/2019/dsa-4394 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20181 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-20181 · Security Note
• https://osv.dev/vulnerability/CVE-2018-20181 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-01586 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2018-20181 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1683-1 · Vendor Advisory