VDB-247368 · CVE-2023-50455 · GCVE-0-2023-50455

Zammad up to 6.1.x Email Address Verification denial of service

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.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Zammad up to 6.1.x. Affected by this vulnerability is an unknown functionality of the component Email Address Verification. The manipulation results in denial of service. This vulnerability was named CVE-2023-50455. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Zammad up to 6.1.x. Affected is some unknown functionality of the component Email Address Verification. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

An issue was discovered in Zammad before 6.2.0. Due to lack of rate limiting in the "email address verification" feature, an attacker could send many requests for a known address to cause Denial Of Service (generation of many emails, which would also spam the victim).

The weakness was presented 12/11/2023. The advisory is shared for download at zammad.com. This vulnerability is traded as CVE-2023-50455 since 12/10/2023. There are neither technical details nor an exploit publicly available.

Upgrading to version 6.2.0 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Zammad

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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: 🔍

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-2023-50455 (🔍)
GCVE (CVE): GCVE-0-2023-50455
GCVE (VulDB): GCVE-100-247368

Entryinfo

Created: 12/11/2023 07:41
Updated: 01/01/2024 10:41
Changes: 12/11/2023 07:41 (39), 01/01/2024 10:41 (11)
Complete: 🔍
Cache ID: 216::103