Mattermost Server up to 4.5.1/4.6.1 SAML Response input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Mattermost Server up to 4.5.1/4.6.1. Impacted is an unknown function. Such manipulation as part of SAML Response leads to input validation. This vulnerability is uniquely identified as CVE-2018-21264. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mattermost Server up to 4.5.1/4.6.1. Affected by this issue is an unknown function. The manipulation as part of a SAML Response leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. It did not enforce the expiration date of a SAML response.

The weakness was disclosed 06/19/2020 (Website). The advisory is shared for download at mattermost.com. This vulnerability is handled as CVE-2018-21264 since 06/19/2020. The exploitation is known to be easy. The attack may be launched remotely. The successful exploitation requires a simple authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 4.5.2, 4.6.2 or 4.7.0 eliminates this vulnerability.

The entries VDB-156956, VDB-156957, VDB-156958 and VDB-156959 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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 Server 4.5.2/4.6.2/4.7.0

Timelineinfo

06/19/2020 🔍
06/19/2020 +0 days 🔍
06/21/2020 +2 days 🔍
10/26/2020 +127 days 🔍

Sourcesinfo

Advisory: mattermost.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-21264 (🔍)
GCVE (CVE): GCVE-0-2018-21264
GCVE (VulDB): GCVE-100-157052
See also: 🔍

Entryinfo

Created: 06/21/2020 09:22
Updated: 10/26/2020 07:45
Changes: 06/21/2020 09:22 (39), 06/21/2020 09:27 (17), 10/26/2020 07:45 (1)
Complete: 🔍
Cache ID: 216::103

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