CyberSecBulletin
CVE-2022-28866NVD status: Modified

Airframe Bmc Web Gui R18 Firmware: Missing Authorization

Published Updated By the CyberSecBulletin desk

CVE-2022-28866 is a high-severity missing authorization vulnerability in Airframe Bmc Web Gui R18 Firmware from Nokia, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 4.13.00 as the first without the flaw, so updating Airframe Bmc Web Gui R18 Firmware to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 1.25% chance of exploitation within 30 days, higher than 70% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Airframe Bmc Web Gui R18 Firmware to 4.13.00 or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
NokiaAirframe Bmc Web Gui R18 Firmwarebefore 4.13.004.13.00

Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Official description

Multiple Improper Access Control was discovered in Nokia AirFrame BMC Web GUI < R18 Firmware v4.13.00. It does not properly validate requests for access to (or editing of) data and functionality in all endpoints under /#settings/* and /api/settings/*. By not verifying the permissions for access to resources, it allows a potential attacker to view pages, with sensitive data, that are not allowed, and modify system configurations also causing DoS, which should be accessed only by user with administration profile, bypassing all controls (without checking for user identity).

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

How developers prevent this class of flaw

  • Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries. Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
  • Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using authorization frameworks such as the JAAS Authorization Framework and the OWASP ESAPI Access Control feature.

More Missing Authorization vulnerabilities (CWE-862)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Technical write-ups (may include proof of concept)

Recent Missing Authorization vulnerabilities

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