Remote username set to an arbitrary string by remote user
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 9.5.7+incompatible, 9.7.6+incompatible, 9.8.2+incompatible, 9.9.1+incompatible, 9.5.7, and 3 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
From 9.5.0 · through 9.5.6; From 9.7.0 · through 9.7.5; From 9.8.0 · through 9.8.1
- github.com/mattermost/mattermost-serverGo
From 9.5.0+incompatible · fixed in 9.5.7+incompatible; From 9.7.0+incompatible · fixed in 9.7.6+incompatible; From 9.8.0+incompatible · fixed in 9.8.2+incompatible; From 9.9.0+incompatible · fixed in 9.9.1+incompatible
- github.com/mattermost/mattermost-server/v5Go
All versions
- github.com/mattermost/mattermost-server/v6Go
All versions
- github.com/mattermost/mattermost/server/v8Go
All versions
- github.com/mattermost/mattermost/server/v8Go
From 9.5.0 · fixed in 9.5.7
- github.com/mattermost/mattermost/server/v8Go
From 9.7.0 · fixed in 9.7.6
- github.com/mattermost/mattermost/server/v8Go
From 9.8.0 · fixed in 9.8.2
- github.com/mattermost/mattermost/server/v8Go
From 9.9.0 · fixed in 9.9.1