CyberSecBulletin
CVE-2024-1132NVD status: Analyzed

Migration Toolkit for Runtimes 1 on RHEL 8: Improper Limitation of a Pathname to a Restricted Directory

Published Updated By the CyberSecBulletin desk

CVE-2024-1132 is a high-severity improper limitation of a pathname to a restricted directory vulnerability in Migration Toolkit for Runtimes 1 on RHEL 8 from Red Hat, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. There is no confirmed exploitation so far. EPSS estimates a 1.55% chance of exploitation within 30 days, higher than 76% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Keycloak to 22.0.10 or 24.0.3, whichever matches your release line, or a later version.
  2. Read the advisory on access.redhat.com for workarounds and exact fixed builds.
  3. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  4. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
Red HatMigration Toolkit for Runtimes 1 on RHEL 8Not specified in the recordNot stated
Red HatMTA-6.2-RHEL-9Not specified in the recordNot stated
Red HatRed Hat AMQ Broker 7Not specified in the recordNot stated
Red HatRed Hat build of Keycloak 22Not specified in the recordNot stated
Red HatRed Hat build of Keycloak 22.0.10Not specified in the recordNot stated
Red HatRed Hat Single Sign-On 7.6 for RHEL 7Not specified in the recordNot stated
Red HatRed Hat Single Sign-On 7.6 for RHEL 8Not specified in the recordNot stated
Red HatRed Hat Single Sign-On 7.6 for RHEL 9Not specified in the recordNot stated
Red HatRHEL-8 based Middleware ContainersNot specified in the recordNot stated
Red HatRHSSO 7.6.8Not specified in the recordNot stated
Red HatRed Hat build of Apicurio Registry 2Not specified in the recordNot stated
Red HatRed Hat build of QuarkusNot specified in the recordNot stated
Red HatRed Hat Data Grid 8Not specified in the recordNot stated
Red HatRed Hat Decision Manager 7Not specified in the recordNot stated
Red HatRed Hat Fuse 7Not specified in the recordNot stated
Red HatRed Hat JBoss Data Grid 7Not specified in the recordNot stated
Red HatRed Hat JBoss Enterprise Application Platform 6Not specified in the recordNot stated
Red HatRed Hat JBoss Enterprise Application Platform 7Not specified in the recordNot stated
Red HatRed Hat Process Automation 7Not specified in the recordNot stated
Red HatBuild Of KeycloakNot specified in the recordNot stated
Red HatJboss Middleware Text-only Advisories1.0Not stated
Red HatKeycloak21.1.0 up to, but not including, 22.0.10; 23.0.0 up to, but not including, 24.0.322.0.10, 24.0.3
Red HatMigration Toolkit For Applications1.0Not stated
Red HatMigration Toolkit For RuntimesNot specified in the recordNot stated
Red HatOpenshift Container Platform4.11; 4.12Not stated

Version data comes from the organisation that assigned the CVE; 4 further products are omitted here. 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
RequiredA user must take an action such as opening a file or link.
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
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N. Scored by CNA (redhat.com).

Official description

A flaw was found in Keycloak, where it does not properly validate URLs included in a redirect. This issue could allow an attacker to construct a malicious request to bypass validation and access other URLs and sensitive information within the domain or conduct further attacks. This flaw affects any client that utilizes a wildcard in the Valid Redirect URIs field, and requires user interaction within the malicious URL.

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

The underlying weakness: Improper Limitation of a Pathname to a Restricted Directory

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

How developers prevent this class of flaw

  • For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth.

More Improper Limitation of a Pathname to a Restricted Directory vulnerabilities (CWE-22)

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 Migration Toolkit for Runtimes 1 on RHEL 8

All Migration Toolkit for Runtimes 1 on RHEL 8 vulnerabilities

Recent Improper Limitation of a Pathname to a Restricted Directory vulnerabilities

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