CVE-2021-43794

CVSS V2 Medium 5 CVSS V3 Medium 5.3
Description
Discourse is an open source discussion platform. In affected versions an attacker can poison the cache for anonymous (i.e. not logged in) users, such that the users are shown a JSON blob instead of the HTML page. This can lead to a partial denial-of-service. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.
Overview
  • CVE ID
  • CVE-2021-43794
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-01T20:15:08
  • Last Modified Date
  • 2021-12-03T03:11:50
Weakness Enumerations
CWE URL
CWE-610 http://cwe.mitre.org/data/definitions/610.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* 1 OR 2.7.11
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • LOW
  • Base Score
  • 5.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hp Third Party Advisory
https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1 Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-43794
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43794
History
Created Old Value New Value Data Type Notes
2022-05-10 06:43:22 Added to TrackCVE
2022-12-05 15:23:48 2021-12-01T20:15Z 2021-12-01T20:15:08 CVE Published Date updated
2022-12-05 15:23:48 2021-12-03T03:11:50 CVE Modified Date updated
2022-12-05 15:23:48 Analyzed Vulnerability Status updated