CVE-2019-7874

Vulnerability

Overview

CVE-2019-7874 is a cross-site request forgery (CSRF) vulnerability affecting Magento Commerce and Open Source versions 2.1 prior to 2.1.18, 2.2 prior to 2.2.9, and 2.3 prior to 2.3.2 [1][2]. The flaw resides in the user role management functionality, where insufficient CSRF protections allow an attacker to forge requests that delete user roles without the administrator's consent [4].

Exploitation

Prerequisites

Exploitation requires that an authenticated administrator with privileges to manage user roles visits a malicious page or clicks a crafted link while logged into the Magento admin panel [2]. The attacker does not need any prior authentication or special network access; the attack is performed by tricking the victim's browser into sending a forged HTTP request to the Magento backend [1].

Impact

Successful exploitation results in the unintended deletion of user roles, which can lead to privilege escalation or disruption of administrative access controls [2]. An attacker could remove roles assigned to other administrators, potentially locking them out or altering permissions, depending on the site's configuration [4].

Mitigation

Adobe released security patches in Magento 2.1.18, 2.2.9, and 2.3.2 to address this vulnerability [1]. Note that Magento 2.1.x reached end-of-life on June 30, 2019, and no longer receives security updates, so users of that branch are strongly advised to upgrade to a supported version [1]. No workarounds have been publicly documented, and the vulnerability is not known to be exploited in the wild as of the advisory publication [2].