Improper Access Control Affecting github.com/mattermost/mattermost/server/channels/store/timerlayer package, versions <9.5.7 >=9.9.0 <9.9.1


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.05% (16th percentile)

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  • Snyk ID SNYK-GOLANG-GITHUBCOMMATTERMOSTMATTERMOSTSERVERCHANNELSSTORETIMERLAYER-7577981
  • published 2 Aug 2024
  • disclosed 1 Aug 2024
  • credit Juho Forsén

How to fix?

Upgrade github.com/mattermost/mattermost/server/channels/store/timerlayer to version 9.5.7, 9.9.1 or higher.

Overview

Affected versions of this package are vulnerable to Improper Access Control due to improper validation of synced reactions when shared channels are enabled. An attacker can manipulate post reactions by sending crafted requests.

CVSS Scores

version 4.0
version 3.1
Expand this section

Snyk

Recommended
5.1 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Attack Requirements (AT)
    None
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    None
  • Confidentiality (VC)
    None
  • Integrity (VI)
    Low
  • Availability (VA)
    None
  • Confidentiality (SC)
    None
  • Integrity (SI)
    None
  • Availability (SA)
    None