xrdp: Authenticated RCE via unsanitized AlternateShell execution in xrdp-sesman
概要
xrdp: Authenticated RCE via unsanitized AlternateShell execution in xrdp-sesman
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
xrdp is an open source RDP server. Versions through 0.10.5 allow an authenticated remote user to execute arbitrary commands on the server due to unsafe handling of the AlternateShell parameter in xrdp-sesman. When the AllowAlternateShell setting is enabled (which is the default when not explicitly configured), xrdp accepts a client-supplied AlternateShell value and executes it via /bin/sh -c during session initialization. This results in shell-interpreted execution of unsanitized, user-controlled input. This behavior effectively provides a scriptable remote command execution primitive over RDP within the security context of the authenticated user, occurring prior to normal window manager startup. This can bypass expected session initialization flows and operational assumptions that restrict execution to interactive desktop environments. This issue has been fixed in version 0.10.6.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2026-33145 xrdp
- Ubuntu UBUNTU-CVE-2026-33145 xrdp
参照URL
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- web github.com