Codesys: Security Vulnerabilities
In CmpBlkDrvTcp of CODESYS V3 in multiple versions an uncontrolled ressource consumption allows an unauthorized attacker to block new TCP connections. Existing connections are not affected.
CVSS Score
7.5
EPSS Score
0.008
Published
2022-07-11
In CmpChannelServer of CODESYS V3 in multiple versions an uncontrolled ressource consumption allows an unauthorized attacker to block new communication channel connections. Existing connections are not affected.
CVSS Score
7.5
EPSS Score
0.008
Published
2022-07-11
Multiple CODESYS Products are prone to a buffer over read. A low privileged remote attacker may craft a request with an invalid offset, which can cause an internal buffer over-read, resulting in a denial-of-service condition. User interaction is not required.
CVSS Score
6.5
EPSS Score
0.009
Published
2022-06-24
Multiple CODESYS Products are prone to a out-of bounds read or write access. A low privileged remote attacker may craft a request with invalid offset, which can cause an out-of-bounds read or write access, resulting in denial-of-service condition or local memory overwrite, which can lead to a change of local files. User interaction is not required.
CVSS Score
8.1
EPSS Score
0.009
Published
2022-06-24
In multiple CODESYS products, file download and upload function allows access to internal files in the working directory e.g. firmware files of the PLC. All requests are processed on the controller only if no level 1 password is configured on the controller or if remote attacker has previously successfully authenticated himself to the controller. A successful Attack may lead to a denial of service, change of local files, or drain of confidential Information. User interaction is not required
CVSS Score
8.8
EPSS Score
0.01
Published
2022-06-24
Multiple products of CODESYS implement a improper error handling. A low privilege remote attacker may craft a request, which is not properly processed by the error handling. In consequence, the file referenced by the request could be deleted. User interaction is not required.
CVSS Score
8.1
EPSS Score
0.009
Published
2022-06-24
In CODESYS Gateway Server V2 for versions prior to V2.3.9.38 only a part of the the specified password is been compared to the real CODESYS Gateway password. An attacker may perform authentication by specifying a small password that matches the corresponding part of the longer real CODESYS Gateway password.
CVSS Score
9.8
EPSS Score
0.01
Published
2022-06-24
In CODESYS Gateway Server V2 an insufficient check for the activity of TCP client connections allows an unauthenticated attacker to consume all available TCP connections and prevent legitimate users or clients from establishing a new connection to the CODESYS Gateway Server V2. Existing connections are not affected and therefore remain intact.
CVSS Score
5.3
EPSS Score
0.009
Published
2022-06-24
The CODESYS Gateway Server V2 does not verifiy that the size of a request is within expected limits. An unauthenticated attacker may allocate an arbitrary amount of memory, which may lead to a crash of the Gateway due to an out-of-memory condition.
CVSS Score
7.5
EPSS Score
0.009
Published
2022-06-24
In the CODESYS Development System multiple components in multiple versions transmit the passwords for the communication between clients and servers unprotected.
CVSS Score
7.5
EPSS Score
0.009
Published
2022-06-24