Vulnerability Information
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Vulnerability Description
An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service "I/O-Check" functionality of WAGO PFC 200. An attacker can send a specially crafted packet to trigger the parsing of this cache file. At 0x1ea28 the extracted state value from the xml file is used as an argument to /etc/config-tools/config_interfaces interface=X1 state=<contents of state node> using sprintf(). The destination buffer sp+0x40 is overflowed with the call to sprintf() for any state values that are greater than 512-len("/etc/config-tools/config_interfaces interface=X1 state=") in length. Later, at 0x1ea08 strcpy() is used to copy the contents of the stack buffer that was overflowed sp+0x40 into sp+0x440. The buffer sp+0x440 is immediately adjacent to sp+0x40 on the stack. Therefore, there is no NULL termination on the buffer sp+0x40 since it overflowed into sp+0x440. The strcpy() will result in invalid memory access. An state value of length 0x3c9 will cause the service to crash.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
WAGO PFC 200 缓冲区错误漏洞
Vulnerability Description
WAGO PFC 200是德国WAGO公司的一款可编程逻辑控制器（PLC）。 WAGO PFC 200中的iocheckd服务的I/O-Check功能存在缓冲区错误漏洞。攻击者可借助特制的xml缓存文件利用该漏洞造成拒绝服务或可能执行代码。
CVSS Information
N/A
Vulnerability Type
N/A