PT-2024-40170 · Pusher · Pusher

Published 2024-05-20 · Updated 2024-05-20

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Pusher (affected versions not specified)

Description: The issue arises from a lack of validation in the libraries provided to customers, allowing a malicious end-user to submit a malformed socket id field. This leads the customer to unknowingly sign a string, granting access to a different private channel than the one the end-user is requesting. A malicious end-user with permission to subscribe to one private channel can forge permission for any private channel owned by the same customer. The HTTP API is secured by requiring a signature with each request, generated by the customer's secret key. In specific cases, a malicious end-user may deceive a customer into signing a value for socket id, effectively authenticating an API request to Pusher.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

GHSA-7V7M-PCW5-H3CG

Affected Products

Pusher

References · 5

• https://osv.dev/vulnerability/GHSA-7v7m-pcw5-h3cg · Vendor Advisory
• https://github.com/FriendsOfPHP/security-advisories/blob/master/pusher/pusher-php-server/2015-05-13.yaml · Note
• https://github.com/pusher/pusher-http-php/commit/5a2ccdd3b14932b9cb5d0f59cf81d19c447214f1 · Note
• https://github.com/pusher/pusher-http-php · Note
• https://blog.pusher.com/update-on-security · Note