CVE-2021-33813

Public on

Last Modified: UTC

Description

The CVE Program describes this issue as:

An XXE issue in SAXBuilder in JDOM through 2.0.6 allows attackers to cause a denial of service via a crafted HTTP request.

Statement

In OpenShift Container Platform (OCP), the hive and hadoop components that comprise the OCP metering stack, ship the vulnerable version of jdom. Since the release of OCP 4.6, the metering product has been deprecated [1], hence the affected components are marked as wontfix. This may be fixed in the future. This flaw is out of support scope for Red Hat Enterprise Linux 6 and 7. Please see the following page for more information on Red Hat Enterprise Linux support scopes: https://access.redhat.com/support/policy/updates/errata/ . [1] https://docs.openshift.com/container-platform/4.6/release_notes/ocp-4-6-release-notes.html#ocp-4-6-metering-operator-deprecated

In OpenShift Container Platform (OCP), the hive and hadoop components that comprise the OCP metering stack, ship the vulnerable version of jdom. Since the release of OCP 4.6, the metering product has been deprecated [1], hence the affected components are marked as wontfix. This may be fixed in the future.

This flaw is out of support scope for Red Hat Enterprise Linux 6 and 7. Please see the following page for more information on Red Hat Enterprise Linux support scopes: https://access.redhat.com/support/policy/updates/errata/ .

[1] https://docs.openshift.com/container-platform/4.6/release_notes/ocp-4-6-release-notes.html#ocp-4-6-metering-operator-deprecated

Additional information

  • Bugzilla 1973413: jdom: XXE allows attackers to cause a DoS via a crafted HTTP request
  • CWE-611: Improper Restriction of XML External Entity Reference
  • FAQ: Frequently asked questions about CVE-2021-33813

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown
Red HatNVD

CVSS v3 Base Score

7.5

7.5

Attack Vector

Network

Network

Attack Complexity

Low

Low

Privileges Required

None

None

User Interaction

None

None

Scope

Unchanged

Unchanged

Confidentiality Impact

None

None

Integrity Impact

None

None

Availability Impact

High

High

CVSS v3 Vector

Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Understanding the Weakness (CWE)

CWE-611

Confidentiality

Technical Impact: Read Application Data; Read Files or Directories

If the attacker is able to include a crafted DTD and a default entity resolver is enabled, the attacker may be able to access arbitrary files on the system.

Integrity

Technical Impact: Bypass Protection Mechanism

The DTD may include arbitrary HTTP requests that the server may execute. This could lead to other attacks leveraging the server's trust relationship with other entities.

Availability

Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory)

The product could consume excessive CPU cycles or memory using a URI that points to a large file, or a device that always returns data such as /dev/random. Alternately, the URI could reference a file that contains many nested or recursive entity references to further slow down parsing.

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?

What can I do if my product is listed as "Will not fix"?

What can I do if my product is listed as "Fix deferred"?

What is a mitigation?

I have a Red Hat product but it is not in the above list, is it affected?

Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?

My product is listed as "Out of Support Scope". What does this mean?

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