5.4
MEDIUM
CVE-2023-45806
Discourse Quoted User Name Injection Vulnerability
Description

Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field.

INFO

Published Date :

Nov. 10, 2023, 3:15 p.m.

Last Modified :

Nov. 21, 2024, 8:27 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2023-45806 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Discourse discourse

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-45806 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-45806 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863
    Added Reference https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e
    Added Reference https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Nov. 17, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
    Changed Reference Type https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863 No Types Assigned https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863 Patch
    Changed Reference Type https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e No Types Assigned https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e Patch
    Changed Reference Type https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78 No Types Assigned https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78 Patch, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:* versions up to (excluding) 3.1.3 *cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:* versions up to (excluding) 3.2.0 *cpe:2.3:a:discourse:discourse:3.2.0:beta1:*:*:beta:*:*:* *cpe:2.3:a:discourse:discourse:3.2.0:beta2:*:*:beta:*:*:*
  • CVE Modified by [email protected]

    Nov. 10, 2023

    Action Type Old Value New Value
    Changed Description Discourse is an open source platform for community discussion. Prior to version 3.13 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.13 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field. Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field.
  • CVE Received by [email protected]

    Nov. 10, 2023

    Action Type Old Value New Value
    Added Description Discourse is an open source platform for community discussion. Prior to version 3.13 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.13 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field.
    Added Reference GitHub, Inc. https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863 [No types assigned]
    Added Reference GitHub, Inc. https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e [No types assigned]
    Added CWE GitHub, Inc. CWE-1333
    Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-45806 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-45806 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

9.38 }} -14.08%

score

0.92024

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability