漏洞信息
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Vulnerability Title
FreeRDP before 3.30.0 Heap Overflow via CliprdrStream_Read
Vulnerability Description
FreeRDP before 3.30.0 (<= 3.29.0) contains a heap-based buffer overflow in the Windows clipboard client's CliprdrStream_Read function (client/Windows/wf_cliprdr.c). When an OLE paste consumer (e.g. explorer.exe) calls IStream::Read with a fixed-size buffer of cb bytes, CliprdrStream_Read requests file contents from the RDP server and then copies the response into the caller's buffer using the server-supplied length (req_fsize) instead of cb. A malicious or compromised RDP server can return an oversized CB_FILECONTENTS_RESPONSE, causing an out-of-bounds write of attacker-controlled data into the paste consumer's heap buffer when a user pastes server-offered clipboard file contents.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:H
Vulnerability Type
跨界内存写
Vulnerability Title
FreeRDP 缓冲区错误漏洞
Vulnerability Description
FreeRDP是FreeRDP团队开源的一款远程桌面协议(RDP)的实现。 FreeRDP 3.30.0之前版本存在安全漏洞,该漏洞源于Windows剪贴板客户端的CliprdrStream_Read函数存在堆缓冲区溢出,在处理OLE粘贴操作时使用服务器提供的长度(req_fsize)而非调用者缓冲区大小(cb)复制数据,可能导致恶意RDP服务器返回过大的CB_FILECONTENTS_RESPONSE,当用户粘贴服务器提供的剪贴板文件内容时造成堆缓冲区越界写入攻击者控制的数据。
CVSS Information
N/A
Vulnerability Type
N/A