CVE-2024-1402GHSA-32H7-7J94-8FC2BIT-MATTERMOST-2024-1402GO-2024-2541
Denial of service in mattermost mobile apps and server via emoji reactions
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 8.1.8, 9.2.4, 9.1.5, 9.1.5+incompatible, 9.2.4+incompatible
- 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
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due to overloading when clients attempt to retrive the aforementioned post.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
through 8.1.7; through 9.1.4; through 9.2.3
- github.com/mattermost/mattermost/server/v8Go
fixed in 8.1.8
- github.com/mattermost/mattermost/server/v8Go
From 9.2.0 · fixed in 9.2.4
- github.com/mattermost/mattermost/server/v8Go
From 9.1.0 · fixed in 9.1.5
- github.com/mattermost/mattermost-serverGo
From 9.1.0+incompatible · fixed in 9.1.5+incompatible; From 9.2.0+incompatible · fixed in 9.2.4+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