CVE-2020-4044

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Summary

CVECVE-2020-4044
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-06-30 16:15:00 UTC
Updated2020-08-14 21:15:00 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: CWE-121

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Neutrinolabs Xrdp All All All All
Application Neutrinolabs Xrdp All All All All

References

ReferenceSourceLinkTags
[security-announce] openSUSE-SU-2020:1200-1: important: Security update SUSE lists.opensuse.org
Local users can perform a buffer overflow attack against the xrdp-sesman service and then impersonate it · Advisory · neutrinolabs/xrdp · GitHub CONFIRM github.com Third Party Advisory
[security-announce] openSUSE-SU-2020:0999-1: important: Security update SUSE lists.opensuse.org
Debian -- Security Information -- DSA-4737-1 xrdp DEBIAN www.debian.org
Merge pull request from GHSA-j9fv-6fwf-p3g4 · neutrinolabs/xrdp@0c791d0 · GitHub MISC github.com Patch, Third Party Advisory
Release xrdp v0.9.13.1 · neutrinolabs/xrdp · GitHub MISC github.com Release Notes, Third Party Advisory
[SECURITY] [DLA 2319-1] xrdp security update MLIST lists.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 199888 Ubuntu Security Notification for xrdp Vulnerability (USN-6469-1)
  • 501332 Alpine Linux Security Update for xrdp
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