libexpat up to 2.6.1 XML_ExternalEntityParserCreate xml external entity reference

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in libexpat up to 2.6.1. It has been rated as problematic. This affects the function XML_ExternalEntityParserCreate. The manipulation leads to xml external entity reference. This vulnerability is traded as CVE-2024-28757. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in libexpat up to 2.6.1. It has been rated as problematic. This issue affects the function XML_ExternalEntityParserCreate. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).

The weakness was shared 03/10/2024 as 839. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2024-28757 since 03/10/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 211212 (Fedora 41 : python3.8 (2024-7a069f48e4)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (211212) and CERT Bund (WID-SEC-2024-0591). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • IBM AIX
  • IBM VIOS
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • F5 BIG-IP
  • SUSE Linux
  • Oracle Linux
  • NetApp ActiveIQ Unified Manager
  • Hitachi Energy RTU500
  • Xerox FreeFlow Print Server
  • IBM App Connect Enterprise
  • OpenBSD OpenBSD
  • Open Source expat
  • Dell PowerScale OneFS
  • Insyde UEFI Firmware
  • NetApp Data ONTAP
  • Red Hat OpenShift

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211212
Nessus Name: Fedora 41 : python3.8 (2024-7a069f48e4)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

03/10/2024 🔍
03/10/2024 +0 days 🔍
03/10/2024 +0 days 🔍
03/26/2026 +746 days 🔍

Sourcesinfo

Product: github.com

Advisory: 839
Status: Confirmed

CVE: CVE-2024-28757 (🔍)
GCVE (CVE): GCVE-0-2024-28757
GCVE (VulDB): GCVE-100-256319
CERT Bund: WID-SEC-2024-0591 - expat: Schwachstelle ermöglicht Denial of Service

Entryinfo

Created: 03/10/2024 12:30
Updated: 03/26/2026 09:56
Changes: 03/10/2024 12:30 (40), 11/16/2024 17:52 (16), 02/26/2025 20:53 (12), 08/04/2025 12:10 (7), 03/26/2026 09:56 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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