security advisorybuffer overflowDebian
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/source-package/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 . Ubuntu Security Notice USN-4600-1 outlines vulnerabilities in OpenSSL, ensuring encryption integrity against potential exploits.. xrdp update, Debian security, xrdp buffer overflow. . Severity: Critical.LinuxSecurity.com Team
Aug 09, 2020
•Critical
Debian LTS