Vulnerability identifier: #VU56933

Vulnerability risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Parse Server
Web applications / Modules and components for CMS

Vendor: Parse Community

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to LiveQuery includes users' session token into payloads. If a user has a LiveQuery subscription on the Parse.User class, all session tokens created during user sign-ups will be broadcast as part of the LiveQuery payload. A remote attacker can obtain the session token from the broadcasted payload and reuse it to bypass authentication.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Parse Server: 4.0.0 - 4.10.3, 2.0.0 - 2.8.4, 3.0.0 - 3.10.0

---

External links
http://github.com/parse-community/parse-server/releases/tag/4.10.4
http://github.com/parse-community/parse-server/security/advisories/GHSA-7pr3-p5fm-8r9x

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.