Rapid7 Vulnerability & Exploit Database

Alpine Linux: CVE-2020-4044: xrdp buffer overflow via malicious payloads

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Alpine Linux: CVE-2020-4044: xrdp buffer overflow via malicious payloads

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
06/30/2020
Created
08/10/2020
Added
08/10/2020
Modified
08/10/2020

Description

The xrdp-sesman service before version 0.9.13.1 can be crashed by connecting over port 3350 and supplying a malicious payload. Once the xrdp-sesman process is dead, an unprivileged attacker on the server could then proceed to start their own imposter sesman service listening on port 3350. This will allow them to capture any user credentials that are submitted to XRDP and approve or reject arbitrary login credentials. For xorgxrdp sessions in particular, this allows an unauthorized user to hijack an existing session. This is a buffer overflow attack, so there may be a risk of arbitrary code execution as well.

Solution(s)

  • alpine-linux-upgrade-xrdp

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;