VDB-276268 · CVE-2023-7279 · ID 1407

Secure Systems Engineering Connaisseur up to 3.3.0 Delegation Name targets_schema.json redos

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.
3.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Secure Systems Engineering Connaisseur up to 3.3.0. It has been declared as problematic. This vulnerability affects unknown code of the file connaisseur/res/targets_schema.json of the component Delegation Name Handler. Executing a manipulation can lead to redos. This vulnerability appears as CVE-2023-7279. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Secure Systems Engineering Connaisseur up to 3.3.0 and classified as problematic. This vulnerability affects some unknown processing of the file connaisseur/res/targets_schema.json of the component Delegation Name Handler. The manipulation with an unknown input leads to a redos vulnerability. The CWE definition for the vulnerability is CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. As an impact it is known to affect availability.

The weakness was presented 11/28/2023 as 1407. The advisory is shared for download at github.com. This vulnerability was named CVE-2023-7279. The exploitation appears to be difficult. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1449.003.

By approaching the search of inurl:connaisseur/res/targets_schema.json it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.3.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 524b73ff7306707f6d3a4d1e86401479bca91b02 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. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

This commit fixes a regular expression denial of service vulnerability that was present during the schema validation of the targets.json TUF file in a Notary validation. An adversary with the ability to alt

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Secure Systems Engineering

Name

Connaisseur

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CNA Base Score: 2.6
CNA Vector: 🔍

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: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Connaisseur 3.3.1
Patch: 524b73ff7306707f6d3a4d1e86401479bca91b02

Timelineinfo

11/28/2023 🔍
11/28/2023 +0 days 🔍
08/31/2024 +277 days 🔍
09/06/2024 +6 days 🔍

Sourcesinfo

Advisory: 1407
Status: Confirmed

CVE: CVE-2023-7279 (🔍)
GCVE (CVE): GCVE-0-2023-7279
GCVE (VulDB): GCVE-100-276268

Entryinfo

Created: 08/31/2024 12:28
Updated: 09/06/2024 06:10
Changes: 08/31/2024 12:28 (60), 09/02/2024 20:24 (17), 09/03/2024 11:08 (1), 09/06/2024 06:10 (11)
Complete: 🔍
Cache ID: 216::103