Advisory Details

November 15th, 2022

Parse Server transformUpdate Prototype Pollution Remote Code Execution Vulnerability

CVE ID	CVE-2022-39396
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Parse
AFFECTED PRODUCTS	Server
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of Parse Server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the transformUpdate function. The issue results from the lack of control over modifications to attributes of object prototypes. An attacker can leverage this vulnerability to execute code in the context of the service account.
ADDITIONAL DETAILS	Parse has issued an update to correct this vulnerability. More details can be found at: https://github.com/parse-community/parse-server/security/advisories/GHSA-prm5-8g2m-24gg
DISCLOSURE TIMELINE	2022-09-20 - Vulnerability reported to vendor 2022-11-15 - Coordinated public release of advisory
CREDIT	Mikhail Shcherbakov (KTH), Cristian-Alexandru Staicu (CISPA) and Musard Balliu (KTH)

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