title: DLL side-loading in BMC Control-M
description: BMC Control-M  branches 9.0.20 and 9.0.21 upon user login load all Dynamic Link Libraries (DLL)  from a directory that grants Write and Read permissions to all users. Leveraging it leads to loading of a potentially malicious libraries, which will execute with the application's privileges.
Fix for 9.0.20 branch was released in version 9.0.20.238. Fix for 9.0.21 branch was released in version 9.0.21.201.
problem types: CWE-284 Improper Access Control
affected:
{
defaultStatus: unknown
product: Control-M
vendor: BMC
versions:
lessThan: 9.0.20.238, status: affected, version: 9.0.20, versionType: custom
lessThan: 9.0.21.201, status: affected, version: 9.0.21, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: LOW
baseScore: 6.6
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: LOW
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
version: 3.1
]
format: CVSS
scenarios: GENERAL