CyberSecBulletin
CVE-2024-24765NVD status: Analyzed

CasaOS-UserService: Exposure of Sensitive Information to an Unauthorized Actor

Published Updated By the CyberSecBulletin desk

CVE-2024-24765 is a critical-severity exposure of sensitive information to an unauthorized actor vulnerability in CasaOS-UserService from IceWhaleTech, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 0.4.7 as the first without the flaw, so updating CasaOS-UserService to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.97% chance of exploitation within 30 days, higher than 62% of scored CVEs.

Patch this week

Critical severity: a successful attack would have severe impact.

What to do

  1. Update CasaOS-UserService to 0.4.7 or a later version.
  2. Update Casaos to 0.4.7 or a later version.
  3. Read the advisory on github.com for workarounds and exact fixed builds.
  4. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
IceWhaleTechCasaOS-UserService< 0.4.7; before 0.4.70.4.7
IcewhaleCasaosbefore 0.4.70.4.7

Version data comes from the organisation that assigned the CVE. 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
NoneNo account or login is needed.
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:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.17.5HighCNA (github.com)
CVSS 3.19.8CriticalNVD

Official description

CasaOS-UserService provides user management functionalities to CasaOS. Prior to version 0.4.7, path filtering of the URL for user avatar image files was not strict, making it possible to get any file on the system. This could allow an unauthorized actor to access, for example, the CasaOS user database, and possibly obtain system root privileges. Version 0.4.7 fixes this issue.

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

The underlying weakness: Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

How developers prevent this class of flaw

  • Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

More Exposure of Sensitive Information to an Unauthorized Actor vulnerabilities (CWE-200)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in CasaOS-UserService

All CasaOS-UserService vulnerabilities

Recent Exposure of Sensitive Information to an Unauthorized Actor vulnerabilities

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