Elefant CMS Version Comparison Persistent cross site scriting

Vulnerability

Analysis

CVE-2017-20058 describes a problematic persistent cross-site scripting (XSS) vulnerability found in Elefant CMS version 1.3.12-RC. The flaw resides in an unknown functionality within the Version Comparison component. Due to improper input sanitization, the component allows an attacker to inject arbitrary web scripts or HTML, which are then stored and later executed in the context of a victim's browser when the affected page is viewed [1].

Exploitation

Method

The attack vector is remote, meaning an unauthenticated user can potentially trigger the injection. The vulnerability is classified as persistent (or stored) XSS, indicating that the injected payload is saved on the server. This typically occurs via crafted input fields or parameters processed by the Version Comparison feature. Once stored, any user visiting the relevant page, including administrators, may execute the injected script without additional user interaction [1].

Impact and

Affected Versions

Successful exploitation could allow an attacker to execute arbitrary JavaScript in the victim's browser session, potentially leading to session hijacking, defacement, or data theft. The vulnerability affects Elefant CMS version 1.3.12-RC. According to the advisory, the issue is resolved in version 1.3.13, which is recommended for all users [1]. The project's repository on GitHub provides access to the source for upgrading or patching [2].

Mitigation

Status

No known public exploit code is cited in the references. The vendor has addressed the vulnerability in the subsequent release, and upgrading to Elefant CMS 1.3.13 or later eliminates the risk. No workarounds are detailed, making the upgrade the sole recommended mitigation [1][2].