GHSA-3p3p-cgj7-vgw3

Suggest an improvement
Source
https://github.com/advisories/GHSA-3p3p-cgj7-vgw3
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-3p3p-cgj7-vgw3/GHSA-3p3p-cgj7-vgw3.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-3p3p-cgj7-vgw3
Aliases
Related
Published
2024-03-06T17:03:11Z
Modified
2024-03-21T18:25:36Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
Summary
RSSHub vulnerable to Server-Side Request Forgery
Details

Summary

Serveral Server-Side Request Forgery (SSRF) vulnerabilities in RSSHub allow remote attackers to use the server as a proxy to send HTTP GET requests to arbitrary targets and retrieve information in the internal network or conduct Denial-of-Service (DoS) attacks.

Details

/mastodon/acct/:acct/statuses/:only_media?

https://github.com/DIYgod/RSSHub/blob/5928c5db2472e101c2f5c3bafed77a2f72edd40a/lib/routes/mastodon/acct.js#L4-L7

https://github.com/DIYgod/RSSHub/blob/5928c5db2472e101c2f5c3bafed77a2f72edd40a/lib/routes/mastodon/utils.js#L85-L105

/zjol/paper/:id?

https://github.com/DIYgod/RSSHub/blob/172f6cfd2b69ea6affdbdedf61e6dde1671f3796/lib/routes/zjol/paper.js#L7-L13

/m4/:id?/:category*

https://github.com/DIYgod/RSSHub/blob/172f6cfd2b69ea6affdbdedf61e6dde1671f3796/lib/routes/m4/index.js#L10-L14

PoC

  • https://rsshub.app/mastodon/acct/test@a6wt15r2.requestrepo.com%23/statuses
  • https://rsshub.app/zjol/paper/a6wt15r2.requestrepo.com%23
  • https://rsshub.app/m4/a6wt15r2.requestrepo.com%23/test

Impact

The attacker can send malicious requests to a RSSHub server, to make the server send HTTP GET requests to arbitrary destinations and see partial responses. This may lead to:

  1. Leak the server IP address, which could be hidden behind a CDN.
  2. Retrieve information in the internal network. e.g. which addresses/ports are accessible, the titles and meta descriptions of HTML pages.
  3. DoS amplification. The attacker could request the server to download some large files, or chain several SSRF requests in a single attacker request: https://rsshub.a.com/zjol/paper/rsshub.b.net%2Fzjol%2Fpaper%2Frsshub.a.com%252Fzjol%252Fpaper%252Frsshub.b.net%25252Fzjol%25252Fpaper%25252Frsshub.a.com%2525252Fzjol%2525252Fpaper%2525252Fexample.com%2525252523%25252523%252523%2523%23.
Database specific
{
    "nvd_published_at": "2024-03-21T02:52:21Z",
    "cwe_ids": [
        "CWE-918"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2024-03-06T17:03:11Z"
}
References

Affected packages

npm / rsshub

Package

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.0-master.a429472