title: CODESYS runtime system prone to denial of service due to use of out of range pointer
description: 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.
problem types: CWE-823 Use of Out-of-range Pointer Offset
affected:
{
platforms: 32 bit
product: Runtime Toolkit
vendor: CODESYS
versions:
lessThan: V2.4.7.57, status: affected, version: V2, versionType: custom
}
{
product: PLCWinNT
vendor: CODESYS
versions:
lessThan: V2.4.7.57, status: affected, version: V2, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 8.1
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
version: 3.1
]