CVE-2023-42822 Unchecked access to font glyph info in xrdp

2023-09-2717:55:02

CWE-125

GitHub_M

www.cve.org

xrdp

font glyph

vulnerability

remote desktop

update

privilege escalation

CVSS3

4.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

AI Score

6.8

Confidence

High

EPSS

0.001

Percentile

30.5%

JSON

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.

CNA Affected

[
  {
    "vendor": "neutrinolabs",
    "product": "xrdp",
    "versions": [
      {
        "version": "< 0.9.23.1",
        "status": "affected"
      }
    ]
  }
]