MattermostVULNRICHMENT:CVE-2024-39839CVE-2024-39839 Remote username set to an arbitrary string by remote user
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
14.7%
SSVC
Exploitation
none
Automatable
no
Technical Impact
partial
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow users to set their own remote username, when shared channels were enabled, which allows a user on a remote to set their remote username prop to an arbitrary string, which would be then synced to the local server as long as the user hadn’t been synced before.
CNA Affected
[
{
"vendor": "Mattermost",
"product": "Mattermost",
"versions": [
{
"status": "affected",
"version": "9.9.0"
},
{
"status": "affected",
"version": "9.5.0",
"versionType": "semver",
"lessThanOrEqual": "9.5.6"
},
{
"status": "affected",
"version": "9.7.0",
"versionType": "semver",
"lessThanOrEqual": "9.7.5"
},
{
"status": "affected",
"version": "9.8.0",
"versionType": "semver",
"lessThanOrEqual": "9.8.1"
},
{
"status": "unaffected",
"version": "9.10.0"
},
{
"status": "unaffected",
"version": "9.9.1"
},
{
"status": "unaffected",
"version": "9.5.7"
},
{
"status": "unaffected",
"version": "9.7.6"
},
{
"status": "unaffected",
"version": "9.8.2"
}
],
"defaultStatus": "unaffected"
}
]References
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
14.7%
SSVC
Exploitation
none
Automatable
no
Technical Impact
partial