40 results · Feed
-
Medium 5.3
xrdp: Out-of-bounds read in GCC Conference Create Request CS_SECURITY processing (xrdp_sec_process_mcs_data_CS_SECURITY)
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the parsing of Client Security Data within the Client MCS Connect Initial PDU with GCC Conference Create Request during the connection sequence. During the initial…
-
High 8.0
xrdp: No authentication required with Xvnc backend on RHEL 9
xrdp is an open source RDP server. In versions 0.10.6 and prior, when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, the Xvnc process is launched with insufficient authentication mechanisms. A local authenticated…
-
Medium 5.3
xrdp: Malformed Confirm Active capability sets cause out-of-bounds reads
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of RDP Confirm Active PDU, where during the capability negotiation phase, the parser did not perform sufficient length validation for specific capab…
-
High 7.5
xrdp: Pre-auth infinite loop via totalLength=0 in TS_SHARECONTROLHEADER
xrdp is an open source RDP server. In versions 0.10.6 and prior, a n issue was discovered where the software fails to properly validate the totalLength field within the RDP protocol control header during packet reception. An unauthenticated remote attacker ca…
-
Medium 5.3
xrdp: Unchecked FIPS padding length in standard RDP Security causes heap out-of-bounds read in HMAC verification
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 wh…
-
High 8.8
xrdp: Channel Data Forwarding Fixed-Size Buffer Overflow
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a heap-based buffer overflow vulnerability within the virtual channel forwarding mechanism. When forwarding data from a remote client to the internal channel server, the xrdp process utilize…
-
Medium 6.5
xrdp: Out-of-bounds read in Client Control PDU processing (xrdp_rdp_process_data_control)
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fi…
-
Medium 5.3
XRDP is vulnerable to a server timing attack, leading to user enumeration
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a timing side-channel vulnerability in the login interface. Due to a discrepancy in response processing times, a remote attacker can infer the existence of a username on the system, leading …
-
High 8.2
xrdp: lib_framebuffer_update Has Integer Overflow Heap Info Leak & ASLR Bypass
xrdp is an open source RDP server. Versions 0.10.6 and prior contain an integer overflow vulnerability when processing screen update messages within the vnc-any connection mode. A malicious remote VNC server can send crafted image dimensions that cause an int…
-
Critical 9.8
xrdp: lib_palette_update Heap Buffer Overflow & RCE
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC s…
-
High 8.7
xrdp: Heap buffer overflow in EGFX channel
xrdp is an open source RDP server. Versions through 0.10.5 have a heap-based buffer overflow in the EGFX (graphics dynamic virtual channel) implementation due to insufficient validation of client-controlled size parameters, allowing an out-of-bounds write via…
-
High 8.7
xrdp: Pre-authentication out-of-bounds reads in channel parsers
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packet…
-
Medium 6.3
xrdp: Authenticated RCE via unsanitized AlternateShell execution in xrdp-sesman
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 (w…
-
Medium 6.3
xrdp: Heap buffer overflow in xrdp_sec_process_logon_info() via incorrect g_strncat length calculation
xrdp is an open source RDP server. Versions through 0.10.5 contain a heap-based buffer overflow vulnerability in its logon processing. In environments where domain_user_separator is configured in xrdp.ini, an unauthenticated remote attacker can send a crafted…
-
High 7.7
xrdp: Pre-authentication out-of-bounds reads in RDP capability and channel parsers
xrdp is an open source RDP server. Versions through 0.10.5 contain an out-of-bounds read vulnerability during the RDP capability exchange phase. The issue occurs when memory is accessed before validating the remaining buffer length. A remote, unauthenticated …
-
High 7.7
xrdp: Heap buffer overflow in NeutrinoRDP channel reassembly
xrdp is an open source RDP server. Versions through 0.10.5 contain a heap-based buffer overflow vulnerability in the NeutrinoRDP module. When proxying RDP sessions from xrdp to another server, the module fails to properly validate the size of reassembled frag…
-
Critical 9.3
xrdp: RDP MAC signature (dataSignature) never verified on receive — integrity bypass in non-TLS mode
xrdp is an open source RDP server. In versions through 0.10.5, xrdp does not implement verification for the Message Authentication Code (MAC) signature of encrypted RDP packets when using the "Classic RDP Security" layer. While the sender correctly generates …
-
High 8.8
xrdp: Fail-open privilege drop in sesexec — child processes may execute as root if setuid fails
xrdp is an open source RDP server. In versions through 0.10.5, the session execution component did not properly handle an error during the privilege drop process. This improper privilege management could allow an authenticated local attacker to escalate privi…
-
Critical 9.1
xrdp improperly checks bounds of domain string length, which leads to Stack-based Buffer Overflow
xrdp is an open source RDP server. xrdp before v0.10.5 contains an unauthenticated stack-based buffer overflow vulnerability. The issue stems from improper bounds checking when processing user domain information during the connection sequence. If exploited, t…
-
High 7.2
xrdp allows an ininite number of login attempts
xrdp is an open source RDP server. xrdp versions prior to 0.10.0 have a vulnerability that allows attackers to make an infinite number of login attempts. The number of max login attempts is supposed to be limited by a configuration parameter `MaxLoginRetry` i…
-
Medium 4.6
Unchecked access to font glyph info in xrdp
xrdp is an open source remote desktop protocol server. Access to the font glyphs in xrdp_painter.c is not bounds-checked . Since some of this data is controllable by the user, this can result in an out-of-bounds read within the xrdp executable. The vulnerabil…
-
Low 2.6
Improper handling of session establishment errors in xrdp
xrdp is an open source remote desktop protocol (RDP) server. In versions prior to 0.9.23 improper handling of session establishment errors allows bypassing OS-level session restrictions. The `auth_start_session` function can return non-zero (1) value on, e.g.…
-
Critical 9.1
Buffer Overflow in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a buffer over flow in audin_send_open() function. There are no known workarounds for this issue. Users are…
-
High 8.2
Integer Overflow in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a Integer Overflow in xrdp_mm_process_rail_update_window_text() function. There are no known workarounds f…
-
High 7.5
Out-of-Bound Read in libxrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a Out of Bound Read in libxrdp_send_to_channel() function. There are no known workarounds for this issue. …
-
None 0.0
Out-of-Bound Read in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a Out of Bound Read in xrdp_sec_process_mcs_data_CS_CORE() function. There are no known workarounds for th…
-
None 0.0
Out-of-Bound Read in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a Out of Bound Read in xrdp_caps_process_confirm_active() function. There are no known workarounds for thi…
-
Critical 9.1
Buffer Overflow in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a buffer over flow in devredir_proc_client_devlist_announce_req() function. There are no known workarounds…
-
Critical 9.1
Buffer Overflow occurs in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a buffer over flow in xrdp_mm_chan_data_in() function. There are no known workarounds for this issue. User…
-
Critical 9.1
Out of Bound Write in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a Out of Bound Write in xrdp_mm_trans_process_drdynvc_channel_open() function. There are no known workarou…
-
Medium 6.5
Buffer Overflow in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a buffer over flow in xrdp_login_wnd_create() function. There are no known workarounds for this issue. Use…
-
Critical 9.1
Out of Bound Read in xrdp
xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). xrdp < v0.9.21 contain a Out of Bound Read in xrdp_mm_trans_process_drdynvc_channel_close() function. There are no known workarou…
-
High 7.8
Privilege escalation on xrdp
xrdp is an open source remote desktop protocol (RDP) server. In affected versions an integer underflow leading to a heap overflow in the sesman server allows any unauthenticated attacker which is able to locally access a sesman server to execute code as root.…
-
High 7.5
Local users can perform a buffer overflow attack against the xrdp-sesman service and then impersonate it
The 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 s…
-
Unscored —
The scp_v0s_accept function in sesman/libscp/libscp_v0.c in the session manager in xrdp through 0.9.4 uses an untrusted…
-
Unscored —
xrdp 0.9.1 calls the PAM function auth_start_session() in an incorrect location, leading to PAM session modules not bei…
-
Unscored —
An issue was discovered in xrdp before 0.9.1. When successfully logging in using RDP into an xrdp session, the file ~/.…
-
Unscored —CVE-2008-5904 Public exploit
The rdp_rdp_process_color_pointer_pdu function in rdp/rdp_rdp.c in xrdp 0.4.1 and earlier allows remote RDP servers to …
-
Unscored —
Array index error in the xrdp_bitmap_def_proc function in xrdp/funcs.c in xrdp 0.4.1 and earlier allows remote attacker…
-
Unscored —
Buffer overflow in the xrdp_bitmap_invalidate function in xrdp/xrdp_bitmap.c in xrdp 0.4.1 and earlier allows remote at…