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CVE Record

CVE-2018-1778: 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 aut...

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’s data / access to their privileges (if the user happens to be an Admin for example). IBM X-Force ID: 148801.

HighCVSS 7.7Not KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

This flaw can let an unauthenticated attacker create a login token for another user in affected IBM API Connect deployments. The risk is serious when the LoopBack AccessToken model is exposed through REST, because a known userId could become access to that user’s data or privileges. Exposure appears limited to the listed IBM API Connect versions, especially deployments exposing the LoopBack AccessToken Model through REST APIs. Internet-facing management or application APIs would increase business risk, but the source bundle does not confirm default exposure. Treat as high priority for any affected API Connect deployment handling sensitive data or privileged administration. The main business risk is unauthorized access as another user, potentially including administrators. Confirm exposure first, then apply IBM’s remediation path. Mitigation focus: Check IBM’s advisory for fixed levels or supported remediation guidance.; Upgrade or patch affected IBM API Connect deployments per IBM guidance.; Ensure the LoopBack AccessToken Model is not exposed over public REST APIs..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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CVE-2018-1778 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.7 (3.0)
Known Exploited
No
Published

Vector: 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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.7CVSS 3.0HighCVSS:3.0/A:L/AC:H/AV:N/C:H/I:H/PR:N/S:U/UI:N/E:U/RC:C/RL:O2.25.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

7.7High
CVSS 3.0 vector shape for CVE-2018-1778Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: 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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
IBMAPI Connect5.0.8.0, 2018.1, 5.0.8.4, 2018.4.1Listed
Weakness

CWE details

No CWE listed

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