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CVE-2023-42822

Unchecked access to font glyph info in xrdp

Published: Sep 27, 2023Updated: Nov 3, 2025 Sources: CVE List NVD BDUCWE-125
NVD MITRE
4.6CVSSMEDIUM
EPSS Score
0.6%
Top 54.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

xrdp is an open source remote desktop protocol server. Access to the font glyphs in xrdp_painter.c is not bounds-checked . Since some of this data is controllable by the user, this can result in an out-of-bounds read within the xrdp executable. The vulnerability allows an out-of-bounds read within a potentially privileged process. On non-Debian platforms, xrdp tends to run as root. Potentially an out-of-bounds write can follow the out-of-bounds read. There is no denial-of-service impact, providing xrdp is running in forking mode. This issue has been addressed in release 0.9.23.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-125

Affected Products

xrdpneutrinolabs
On-prem
Networking Infrastructure / network-management
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Альт 8 СПАО «ИВК»
On-premOS
Operating Systems / linux-distro
neutrinolabsoss-projectNetworking Infrastructure
fedoraprojectoss-projectUSOperating Systemsaka fedora project
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
ооо «ред софт»commercialRUOperating Systemsaka red soft
ао «ивк»commercialRUOperating Systemsaka ivk
and 5 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/neutrinolabs/xrdp/commit/73acbe1f7957c65122b00de4d6f57a8d0d257c40
github.com
https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-2hjx-rm4f-r9hw
github.com
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5FPGA4M7IYCP7OILDF2ZJEVSXUOFEFQ6/
lists.fedoraproject.org
and 16 more references View all →

Timeline

Published
Sep 27, 2023
Last Updated
Nov 3, 2025

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