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CVE-2025-68670 is a pre-authentication stack-based buffer overflow in xrdp affecting versions prior to 0.10.5. The flaw is in xrdp_wm_parse_domain_information, which processes client-supplied domain information during the RDP connection sequence before user authentication. xrdp converts the incoming domain field from UTF-16 to UTF-8 and then copies attacker-controlled data into a 256-byte stack buffer without adequate bounds checking. A specially crafted domain value, including the parsing pattern handled by the function, can exceed the destination buffer and overwrite adjacent stack memory, including the saved return address. This memory corruption can be used to redirect control flow and potentially achieve arbitrary code execution in the context of the xrdp server process.
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Критическая pre-auth remote code execution уязвимость в xrdp, вызванная переполнением стекового буфера в функции xrdp_wm_parse_domain_information при обработке доменного имени из Client Info PDU до аутентификации.
A pre-authentication remote code execution vulnerability in xrdp caused by a stack-based buffer overflow when parsing domain information after UTF-16 to UTF-8 conversion.
A pre-authentication remote code execution vulnerability in xrdp caused by a stack-based buffer overflow when processing the RDP domain name field after UTF-16 to UTF-8 conversion. An attacker can supply an oversized crafted domain string to overwrite stack data and potentially control execution flow in the xrdp server process.
Unauthenticated stack-based buffer overflow in xrdp (pre-0.10.5) during connection handling of user domain information, potentially enabling remote code execution by overwriting stack data/return address; impact may be reduced if built with stack canary protection.
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