Executive Summary

Informations
Name CVE-2023-27592 First vendor Publication 2023-03-17
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Overall CVSS Score 5.4
Base Score 5.4 Environmental Score 5.4
impact SubScore 2.7 Temporal Score 5.4
Exploitabality Sub Score 2.3
 
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction Required
Scope Changed Confidentiality Impact Low
Integrity Impact Low Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

Miniflux is a feed reader. Since v2.0.25, Miniflux will automatically proxy images served over HTTP to prevent mixed content errors.

When an outbound request made by the Go HTTP client fails, the `html.ServerError` is returned unescaped without the expected Content Security Policy header added to valid responses.

By creating an RSS feed item with the inline description containing an `` tag with a `srcset` attribute pointing to an invalid URL like `http:a<script>alert(1)</script>`, we can coerce the proxy handler into an error condition where the invalid URL is returned unescaped and in full.

This results in JavaScript execution on the Miniflux instance as soon as the user is convinced (e.g. by a message in the alt text) to open the broken image.

An attacker can execute arbitrary JavaScript in the context of a victim Miniflux user when they open a broken image in a crafted RSS feed. This can be used to perform actions on the Miniflux instance as that user and gain administrative access to the Miniflux instance if it is reachable and the victim is an administrator.

A patch is available in version 2.0.43. As a workaround sisable image proxy; default value is `http-only`.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-27592

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

https://github.com/miniflux/v2/blob/b2fd84e0d376a3af6329b9bb2e772ce38a25c31c/...
https://github.com/miniflux/v2/blob/b2fd84e0d376a3af6329b9bb2e772ce38a25c31c/...
https://github.com/miniflux/v2/pull/1746
https://github.com/miniflux/v2/releases/tag/2.0.25
https://github.com/miniflux/v2/releases/tag/2.0.43
https://github.com/miniflux/v2/security/advisories/GHSA-mqqg-xjhj-wfgw
https://miniflux.app/docs/configuration.html#proxy-images
Source Url

Alert History

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Date Informations
2024-11-28 14:23:34
  • Multiple Updates
2023-11-07 21:29:43
  • Multiple Updates
2023-03-24 21:27:21
  • Multiple Updates
2023-03-20 09:27:15
  • Multiple Updates
2023-03-18 00:27:17
  • First insertion