title: Server-side Denial of Service while processing a specifically crafted GIF file
description: Mattermost 6.2 and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.
problem types: CWE-400 Uncontrolled Resource Consumption
affected:
{
product: Mattermost
vendor: Mattermost
versions:
lessThanOrEqual: 6.2, status: affected, version: unspecified, versionType: custom
lessThan: unspecified, status: unaffected, version: 6.1.1, versionType: custom
lessThan: unspecified, status: unaffected, version: 6.0.4, versionType: custom
lessThan: unspecified, status: unaffected, version: 5.39.3, versionType: custom
lessThan: unspecified, status: unaffected, version: 5.37.6, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 4.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
version: 3.1
]