CVE-2024-28168
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Description
A flaw was found in Apache XML Graphics FOP. This vulnerability allows remote attackers to cause issues via improper handling of XML External Entity (XXE) references.
Statement
The XXE vulnerability in Apache XML Graphics FOP is considered important rather than moderate due to its potential to compromise the confidentiality, integrity, and availability of a system. XXE flaws can be exploited to access sensitive internal files, such as configuration or credential files, leading to data exposure without authorization. Additionally, XXE attacks may enable attackers to perform server-side request forgery (SSRF), allowing them to make unauthorized requests to internal systems or services, potentially pivoting within a network.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Additional information
- Bugzilla 2317557: fop: Improper Restriction of XML External Entity Reference ('XXE')
- CWE-611: Improper Restriction of XML External Entity Reference
- FAQ: Frequently asked questions about CVE-2024-28168
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).
The following CVSS metrics and score provided are preliminary and subject to review.
| Red Hat | NVD | |
|---|---|---|
CVSS v3 Base Score | 7.5 | N/A |
Attack Vector | Network | N/A |
Attack Complexity | Low | N/A |
Privileges Required | None | N/A |
User Interaction | None | N/A |
Scope | Unchanged | N/A |
Confidentiality Impact | High | N/A |
Integrity Impact | None | N/A |
Availability Impact | None | N/A |
CVSS v3 Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Understanding the Weakness (CWE)
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?
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