description: IBM LoopBack (IBM API Connect 2018.1, 2018.4.1, 5.0.8.0, and 5.0.8.4) could allow an attacker to bypass authentication if the AccessToken Model is exposed over a REST API, it is then possible for anyone to create an AccessToken for any User provided they know the userId and can hence get access to the other user&#195;&#162;&#194;&#128;&#194;&#153;s data / access to their privileges (if the user happens to be an Admin for example). IBM X-Force ID: 148801.
problem types: Bypass Security
affected:
{
product: API Connect
vendor: IBM
versions:
status: affected, version: 5.0.8.0
status: affected, version: 2018.1
status: affected, version: 5.0.8.4
status: affected, version: 2018.4.1
}
metrics:
cvssV3_0: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 7.7
baseSeverity: HIGH
confidentialityImpact: HIGH
exploitCodeMaturity: UNPROVEN
integrityImpact: HIGH
privilegesRequired: NONE
remediationLevel: OFFICIAL_FIX
reportConfidence: CONFIRMED
scope: UNCHANGED
temporalScore: 6.7
temporalSeverity: MEDIUM
userInteraction: NONE
vectorString: CVSS:3.0/A:L/AC:H/AV:N/C:H/I:H/PR:N/S:U/UI:N/E:U/RC:C/RL:O
version: 3.0
]