CVE-2023-40703GHSA-C37R-V8JX-7CV2
Denial of Service via specially crafted block fields in Mattermost Boards
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 9.1.1, 9.0.2, 8.1.4, 7.8.13
- 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 properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Mattermost Mattermost
through 7.8.12; through 8.1.3; through 9.0.1; through 9.1.0
- github.com/mattermost/mattermost/server/v8Go
From 9.1.0 · fixed in 9.1.1
- github.com/mattermost/mattermost/server/v8Go
From 9.0.0 · fixed in 9.0.2
- github.com/mattermost/mattermost/server/v8Go
fixed in 8.1.4
- github.com/mattermost/mattermost-server/v6Go
fixed in 7.8.13