漏洞信息
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Vulnerability Title
N/A
Vulnerability Description
nanoMODBUS through v1.23.0 contains an off-by-one buffer overflow in the recv_msg_header() function of the Modbus/TCP server that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of the 260-byte receive buffer by sending a crafted MBAP frame whose Length field is set to 255. The overflow corrupts the adjacent buffer-index field of the nanoMODBUS state structure, resulting in denial of service through invalid memory accesses and, on bare-metal and RTOS targets without memory protection, one-byte information disclosure and writes to unintended register addresses on the Write Multiple Registers (FC16) handler path.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Vulnerability Type
Off-by-one错误
Vulnerability Title
Valerio De Benedetto nanoMODBUS 数字错误漏洞
Vulnerability Description
Valerio De Benedetto nanoMODBUS是Valerio De Benedetto个人开发者的一款适用于嵌入式/微控制器的紧凑型MODBUS RTU/TCP C库。 Valerio De Benedetto nanoMODBUS 1.23.0及之前版本存在安全漏洞,该漏洞源于recv_msg_header()函数中存在差一错误缓冲区溢出,可能导致未经身份验证的远程攻击者发送特制的MBAP帧,越界写一个字节并破坏相邻的buffer-index字段,导致无效内存访问从而造成拒绝服务,在无
CVSS Information
N/A
Vulnerability Type
N/A