title: Stack overflow in document extractor in Mattermost
description: A stack overflow bug in the document extractor in Mattermost Server in versions up to and including 6.3.2 allows an attacker to crash the server via submitting a maliciously crafted Apple Pages document.
problem types: Call stack overflow / goroutine stack overflow
affected:
{
product: Mattermost
vendor: Mattermost
versions:
lessThan: 6.3.3, status: affected, version: 6.3, versionType: custom
lessThan: 6.2.3, status: affected, version: 6.2, versionType: custom
lessThan: 6.1.3, status: affected, version: 6.1, versionType: custom
lessThan: 5.37.8, status: affected, version: 5.37, 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
]
solutions: Update the Mattermost version to v6.3.3, 6.2.3, 6.1.3, or 5.37.8, depending on the minor version being run