CVE-2023-6837

Incorrect Authorization in Multiple WSO2 Products via Federated Authentication with JIT Provisioning Leading to User Impersonation

HIGH

8.2

CVSS Score

Published: December 15, 2023 at 09:41 AM UTC

Updated: June 17, 2026 at 06:51 AM UTC

5 products affected across 1 vendorAPI ManagerIdentity ServerIdentity Server As Key Manager

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Severity

HIGH8.2

Exploit prediction

EPSS 0.5%

Description

Multiple WSO2 products have been identified as vulnerable to perform user impersonatoin using JIT provisioning. In order for this vulnerability to have any impact on your deployment, following conditions must be met: * An IDP configured for federated authentication and JIT provisioning enabled with the "Prompt for username, password and consent" option. * A service provider that uses the above IDP for federated authentication and has the "Assert identity using mapped local subject identifier" flag enabled. Attacker should have: * A fresh valid user account in the federated IDP that has not been used earlier. * Knowledge of the username of a valid user in the local IDP. When all preconditions are met, a malicious actor could use JIT provisioning flow to perform user impersonation.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

API Manager · WSO2

95%

2.5.0 ≤ v < 2.5.0.322.6.0 ≤ v < 2.6.0.523.0.0 ≤ v < 3.0.0.503.1.0 ≤ v < 3.1.0.723.2.0 ≤ v < 3.2.0.864.0.0 ≤ v < 4.0.0.352.5.0 2.6.0 3.0.0 3.1.0 3.2.0 4.0.0

Affected range stops below 2.5.0.32, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.6.0.52, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.0.0.50, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.1.0.72, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.2.0.86, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.0.0.35, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 2.5.0 (unknown)

Carbon Identity Application Authentication Endpoint · WSO2

95%

v < 5.11.256.35.11.257.0 ≤ v < 5.12.153.195.12.154.0 ≤ v < 5.20.254

Affected range stops below 5.11.256.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.12.153.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.20.254, so it looks safe — our inference, not a vendor statement

Carbon Identity Application Authentication Framework · WSO2

95%

v < 5.11.256.35.11.256 ≤ v < 5.11.256.35.11.257.0 ≤ v < 5.12.153.215.12.153 ≤ v < 5.12.153.215.12.154.0 ≤ v < 5.12.387.75.12.387 ≤ v < 5.12.387.75.12.388.0 ≤ v < 5.14.97.225.14.97 ≤ v < 5.14.97.225.14.98.0 ≤ v < 5.17.5.1065.17.5 ≤ v < 5.17.5.1065.17.6.0 ≤ v < 5.18.187.765.18.187 ≤ v < 5.18.187.765.18.188.0 ≤ v < 5.20.2545.11.256 5.12.153 5.12.387 5.14.97 5.17.5 5.18.187

Affected range stops below 5.11.256.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.12.153.21, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.12.387.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.14.97.22, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.17.5.106, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.18.187.76, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 5.20.254 (unaffected)

Identity Server · WSO2

95%

5.10.0 ≤ v < 5.10.0.785.11.0 ≤ v < 5.11.0.695.6.0 ≤ v < 5.6.0.165.7.0 ≤ v < 5.7.0.355.8.0 ≤ v < 5.8.0.265.9.0 ≤ v < 5.9.0.385.10.0 5.11.0 5.6.0 5.7.0 5.8.0 5.9.0

Affected range stops below 5.10.0.78, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.11.0.69, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.6.0.16, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.7.0.35, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.8.0.26, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.9.0.38, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 5.6.0 (unknown)

Identity Server As Key Manager · WSO2

95%

5.10.0 ≤ v < 5.10.0.805.6.0 ≤ v < 5.6.0.175.7.0 ≤ v < 5.7.0.395.9.0 ≤ v < 5.9.0.455.10.0 5.6.0 5.7.0 5.9.0

Affected range stops below 5.10.0.80, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.6.0.17, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.7.0.39, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.9.0.45, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 5.6.0 (unknown)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1573/

References (1)

Vendor Advisory

Source: ed10eef1-636d-4fbe-9993-6890dfa878f8

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2022/WSO2-2021-1573/

CVSS

8.2HIGH[email protected]

Attack Vector: NETWORK
Complexity: HIGH
Privileges: LOW
User Interaction: NONE
Scope: CHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-863NVD-CWE-noinfo

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