CyberRota Analysis
AI-GeneratedThe xrdp server versions prior to 0.10.6.1 are vulnerable to a heap out-of-bounds read when configured with FIPS mode enabled and specific security layer settings. An unauthenticated remote attacker can exploit this vulnerability to induce a denial of service (DoS) by sending a specially crafted FIPS-protected PDU, although the impact is limited to individual connections rather than the entire service. Organizations using xrdp in FIPS mode should prioritize upgrading to the patched version to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a heap out-of-bounds read vulnerability within the FIPS-specific receive paths. This vulnerability does not affect the default configuration of xrdp. The vulnerability is only exploitable when the security layer is set to security_layer=negotiate or security_layer=rdp, and the crypto level is changed to crypt_level=fips in xrdp.ini. In this specific non-default mode, the server fails to validate the FIPS padding length field, leading to a pointer underflow and a subsequent negative length calculation. An unauthenticated remote attacker can exploit this by sending a crafted FIPS-protected PDU, causing a heap out-of-bounds read that results in a process crash and denial of service (DoS). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service. This issue has been fixed in version 0.10.6.1.
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