CVE-2024-39899 PrivateBin allows shortening of URLs for other domains

2024-07-0918:57:50

CWE-305

CWE-791

GitHub_M

www.cve.org

cve-2024-39899

privatebin

url shortening

yourls

proxy

vulnerability

fix

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

Percentile

15.8%

JSON

PrivateBin is an online pastebin where the server has zero knowledge of pasted data. In v1.5, PrivateBin introduced the YOURLS server-side proxy. The idea was to allow using the YOURLs URL shortener without running the YOURLs instance without authentication and/or exposing the authentication token to the public, allowing anyone to shorten any URL. With the proxy mechanism, anyone can shorten any URL pointing to the configured PrivateBin instance. The vulnerability allowed other URLs to be shortened, as long as they contain the PrivateBin instance, defeating the limit imposed by the proxy. This vulnerability is fixed in 1.7.4.

CNA Affected

[
  {
    "vendor": "PrivateBin",
    "product": "PrivateBin",
    "versions": [
      {
        "version": ">= 1.5.0, < 1.7.4",
        "status": "affected"
      }
    ]
  }
]