PT-2019-1461 · Rdesktop+2 · Rdesktop+2

Eyal Itkin · Published 2019-01-18 · Updated 2024-06-15 · CVE-2018-8794

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 Overflow in the process bitmap updates() function, leading to an Out-Of-Bounds Write and resulting in memory corruption. This could potentially allow for remote code execution. The vulnerability is associated with the implementation of the process bitmap updates function in the RDP client.

Recommendations For rdesktop versions up to and including v1.8.3, consider disabling the process bitmap updates() function as a temporary workaround until a patch is available. Restrict access to the RDP client to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Integer Overflow

Memory Corruption

Weakness Enumeration

CWE-190

CWE-680

CWE-787

Related Identifiers

ALT-PU-2019-2898

ALT-PU-2020-1636

BDU:2019-00851

CVE-2018-8794

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://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1 · Patch
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2018-8794 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:2135-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-00851 · Security Note
• https://advisories.mageia.org/MGASA-2019-0041.html · Security Note
• https://cve.org/CVERecord?id=CVE-2018-8794 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-8794 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-8794 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-8794 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2018-8794 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0041 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-8794 · Vendor Advisory
• https://debian.org/security/2019/dsa-4394 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1683-1 · Vendor Advisory