GHSA-gg42-mwr6-p82c

ghsaUSosv

Mattermost Server has intermittent Authorization bypass for resource-owners

view advisory published 2022-05-24Licence: CC-BY-4.0

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider. Resource-owner authorization can be intermittently bypassed, allowing account takeover.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2017-18894US	high8.1	0.83% (57th)	—	2020-06-19
An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider. Sometimes. resource-owner authorization is bypassed, allowi…

references

External citations — patches, advisories, analysis.

https://github.com/mattermost/mattermostPACKAGE
https://mattermost.com/security-updatesWEB
https://nvd.nist.gov/vuln/detail/CVE-2017-18894ADVISORY

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