Mattermost up to 7.8.12/8.1.3/9.0.1/9.1.0 Board resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Mattermost up to 7.8.12/8.1.3/9.0.1/9.1.0. This impacts an unknown function of the component Board. This manipulation causes resource consumption. This vulnerability is registered as CVE-2023-40703. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Mattermost up to 7.8.12/8.1.3/9.0.1/9.1.0 and classified as problematic. Affected by this vulnerability is an unknown code of the component Board. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. The summary by CVE is:

Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string. 

The weakness was published 11/27/2023 by Vultza. The advisory is shared at mattermost.com. This vulnerability is known as CVE-2023-40703 since 11/22/2023. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 7.8.13, 8.1.4, 9.0.2 or 9.1.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 4.3
CNA Vector (Mattermost, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
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: Mattermost 7.8.13/8.1.4/9.0.2/9.1.1

Timelineinfo

11/22/2023 🔍
11/27/2023 +5 days 🔍
11/27/2023 +0 days 🔍
12/16/2023 +19 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Vultza
Status: Confirmed

CVE: CVE-2023-40703 (🔍)
GCVE (CVE): GCVE-0-2023-40703
GCVE (VulDB): GCVE-100-246145

Entryinfo

Created: 11/27/2023 10:59
Updated: 12/16/2023 19:53
Changes: 11/27/2023 10:59 (49), 12/16/2023 19:53 (12)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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