Zammad up to 6.1.x Login Screen /api/v1/signshow information disclosure

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 (≈)
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CTI Interest Score
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4.3$0-$5k0.00

A vulnerability has been found in Zammad up to 6.1.x and classified as problematic. Affected by this vulnerability is an unknown part of the file /api/v1/signshow of the component Login Screen. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

An issue was discovered in Zammad before 6.2.0. It uses the public endpoint /api/v1/signshow for its login screen. This endpoint returns internal configuration data of user object attributes, such as selectable values, which should not be visible to the public.

The weakness was shared 12/11/2023. The advisory is shared at zammad.com. This vulnerability is known as CVE-2023-50453 since 12/10/2023. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 6.2.0 eliminates this vulnerability.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

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: Zammad 6.2.0

Timelineinfo

12/10/2023 🔍
12/11/2023 +1 days 🔍
12/11/2023 +0 days 🔍
01/01/2024 +21 days 🔍

Sourcesinfo

Advisory: zammad.com
Status: Confirmed

CVE: CVE-2023-50453 (🔍)

Entryinfo

Created: 12/11/2023 07:41 AM
Updated: 01/01/2024 10:48 AM
Changes: 12/11/2023 07:41 AM (40), 01/01/2024 10:48 AM (11)
Complete: 🔍
Cache ID: 18:C36:40

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