InfoSecBulletin Cybersecurity for mankind
Fortinet has fixed several vulnerabilities in its products, including FortiAnalyzer, FortiManager, FortiOS, FortiProxy, FortiVoice, FortiWeb, and FortiSwitch.
The vulnerabilities include improper log handling, unverified password changes, and weak credential protection. The company has released patches and strategies to protect users from possible exploitation.
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Insufficiently Protected Credentials Vulnerability in FortiOS:
A key vulnerability in FortiOS is poor protection of credentials (CWE-522). This allows a privileged attacker to retrieve LDAP credentials by redirecting the configuration’s LDAP server IP to a malicious server.
Affected Versions:
All versions of FortiOS 7.4, 7.2, 7.0, and 6.4 are vulnerable.
FortiOS 7.6 is not affected.
Users are advised to migrate to fixed releases using Fortinet’s upgrade tool. Fortinet thanked Vladislav Driev and Oleg Labyntsev for responsibly reporting the vulnerability.
Improper Output Neutralization for Logs in FortiManager and FortiAnalyzer:
A vulnerability (CWE-117) in FortiManager and FortiAnalyzer may let unauthenticated remote attackers corrupt logs through specially crafted login requests.
Affected Versions:
Vulnerable versions include 7.6.0–7.6.1 for both products.
Earlier versions such as 7.4.x and 7.2.x are also affected.
Users should upgrade to versions 7.6.2 or above for FortiManager and FortiAnalyzer. Fortinet acknowledged Alexandre Labb from A1 Digital International for identifying this issue.
Man-in-the-Middle Vulnerability Across Multiple Products:
A man-in-the-middle vulnerability (CWE-923) was identified in multiple products, such as FortiOS, FortiProxy, FortiManager, and others.
This vulnerability allows attackers to impersonate management devices by intercepting authentication requests between managed devices and systems like FortiCloud or FortiManager.
Affected Versions:
Vulnerable versions span across multiple releases of FortiOS (6.x–7.x), FortiProxy (2.x–7.x), and other products such as FortiVoice and FortiWeb.
Users should upgrade to fixed versions as specified in the advisory. Théo Leleu from the Product Security team and Stephen Bevan from the Development team at Fortinet identified this vulnerability.
Unverified Password Change Vulnerability in FortiSwitch GUI:
Fortinet reported an unverified password change vulnerability (CWE-620) in the FortiSwitch GUI. This flaw may enable remote unauthenticated attackers to change admin passwords using specially crafted requests.
Affected Versions:
Versions 6.4.x–7.x are vulnerable.
Upgrade to fixed versions or disable HTTP/HTTPS access from administrative interfaces as a workaround. This flaw was discovered by Daniel Rozeboom of the FortiSwitch web UI development team.
Fortinet urges users to upgrade their systems immediately with its upgrade tool or use available workarounds if patching isn’t possible.
The company has worked closely with researchers and international agencies to ensure timely disclosure and mitigation strategies.
All advisories were released on April 8, 2025, promoting transparency and customer security within the product ecosystem. Users can consult Fortinet’s official documentation for comprehensive guidance on upgrading or addressing these vulnerabilities.
