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    Debian LTS: DLA-2319-1: xrdp security update

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    xrdp-sesman service in xrdp 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
    
    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-2319-1                This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/lts/security/                          Abhijith PA
    August 09, 2020                               https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------
    
    Package        : xrdp
    Version        : 0.9.1-9+deb9u4
    CVE ID         : CVE-2020-4044
    Debian Bug     : 964573
    
    xrdp-sesman service in xrdp 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.
    
    For Debian 9 stretch, this problem has been fixed in version
    0.9.1-9+deb9u4.
    
    We recommend that you upgrade your xrdp packages.
    
    For the detailed security status of xrdp please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/xrdp
    
    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    

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