CVE-2023-42822
Publication date 27 September 2023
Last updated 24 July 2024
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| xrdp | 24.04 LTS noble |
Needs evaluation
|
| 22.04 LTS jammy |
Fixed 0.9.17-2ubuntu2+esm1
|
|
| 20.04 LTS focal |
Fixed 0.9.12-1ubuntu0.1+esm1
|
|
| 18.04 LTS bionic |
Fixed 0.9.5-2ubuntu0.1~esm2
|
|
| 16.04 LTS xenial |
Fixed 0.6.1-2ubuntu0.3+esm3
|
|
| 14.04 LTS trusty |
Fixed 0.6.0-1ubuntu0.1+esm3
|
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Get Ubuntu ProSeverity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.5 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-6474-1
- xrdp vulnerabilities
- 8 November 2023