CVE-2021-41163

RCE via malicious SNS subscription payload

State
Published
Severity
10.0 Critical
Published
Oct 20, 2021
Updated
Aug 4, 2024
Reserved
Sep 15, 2021

Read the record on cve.org

Description

Discourse is an open source platform for community discussion. In affected versions maliciously crafted requests could lead to remote code execution. This resulted from a lack of validation in subscribe_url values. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. To workaround the issue without updating, requests with a path starting /webhooks/aws path could be blocked at an upstream proxy.

Scores

CVSSScoreVectorSource
3.110.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HGitHub_M

Weaknesses

  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Affected Products

ProductVersions
discoursediscourse
  • tests-passed < 2.8.0.beta7Affected
  • beta < 2.8.0.beta7Affected
  • stable < 2.7.9Affected

References

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