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GitHub_MCVELIST:CVE-2023-23621

HistoryJan 27, 2023 - 11:31 p.m.

CVE-2023-23621 Discourse vulnerable to ReDoS in user agent parsing

2023-01-2723:31:05

CWE-1333

GitHub_M

www.cve.org

discourse

redos

user agent parsing

version 3.0.1

version 3.1.0.beta2

denial of service

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

8.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

34.7%

JSON

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the stable branch and version 3.1.0.beta2 on the beta and tests-passed branches, a malicious user can cause a regular expression denial of service using a carefully crafted user agent. This issue is patched in version 3.0.1 on the stable branch and version 3.1.0.beta2 on the beta and tests-passed branches. There are no known workarounds.

CNA Affected

[
  {
    "vendor": "discourse",
    "product": "discourse",
    "versions": [
      {
        "version": "< 3.0.1",
        "status": "affected"
      },
      {
        "version": "= 3.1.0.beta1",
        "status": "affected"
      }
    ]
  }
]

References

github.com/discourse/discourse/commit/6d92c3cbdac431db99a450f360a3048bb3aaf458

github.com/discourse/discourse/pull/20002

github.com/discourse/discourse/security/advisories/GHSA-mrfp-54hf-jrcv

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

8.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

34.7%

JSON

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