VDB-238523 · CVE-2023-41034 · GHSA-wc9j-gc65-3cm7

Eclipse Leshan up to 1.4.x/2.0.0-M12 DDFFileParser/DefaultDDFFileValidator xml external entity reference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Eclipse Leshan up to 1.4.x/2.0.0-M12. It has been classified as problematic. Affected is the function DDFFileParser/DefaultDDFFileValidator. The manipulation leads to xml external entity reference. This vulnerability is listed as CVE-2023-41034. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Eclipse Leshan up to 1.4.x/2.0.0-M12 and classified as problematic. This issue affects the function DDFFileParser/DefaultDDFFileValidator. 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:

Eclipse Leshan is a device management server and client Java implementation. In affected versions DDFFileParser` and `DefaultDDFFileValidator` (and so `ObjectLoader`) are vulnerable to `XXE Attacks`. A DDF file is a LWM2M format used to store LWM2M object description. Leshan users are impacted only if they parse untrusted DDF files (e.g. if they let external users provide their own model), in that case they MUST upgrade to fixed version. If you parse only trusted DDF file and validate only with trusted xml schema, upgrading is not mandatory. This issue has been fixed in versions 1.5.0 and 2.0.0-M13. Users are advised to upgrade. There are no known workarounds for this vulnerability.

The weakness was presented 09/01/2023 as GHSA-wc9j-gc65-3cm7. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-41034 since 08/22/2023. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.5.0 or 2.0.0-M13 eliminates this vulnerability. Applying the patch 29577d2879ba8e7674c3b216a7f01193fc7ae013 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Eclipse

Name

Leshan

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Leshan 1.5.0/2.0.0-M13
Patch: 29577d2879ba8e7674c3b216a7f01193fc7ae013

Timelineinfo

08/22/2023 🔍
09/01/2023 +10 days 🔍
09/01/2023 +0 days 🔍
09/29/2023 +28 days 🔍

Sourcesinfo

Advisory: GHSA-wc9j-gc65-3cm7
Status: Confirmed

CVE: CVE-2023-41034 (🔍)
GCVE (CVE): GCVE-0-2023-41034
GCVE (VulDB): GCVE-100-238523

Entryinfo

Created: 09/01/2023 07:42
Updated: 09/29/2023 08:12
Changes: 09/01/2023 07:42 (53), 09/29/2023 08:12 (11)
Complete: 🔍
Cache ID: 216::103