CVE-2016-7786

published 2017-04-07

CVE-2016-7786: Sophos Cyberoam UTM CR25iNG 10.6.3 MR-5 allows remote authenticated users to bypass intended access restrictions via direct object reference, as demonstrated…

Priority P2 61 high 8.8 CVSS 3.0

AV N AC L PR L UI N S U C H I H A H

EXPLOIT

Sophos Cyberoam UTM CR25iNG 10.6.3 MR-5 allows remote authenticated users to bypass intended access restrictions via direct object reference, as demonstrated by a request for Licenseinformation.jsp. This is fixed in 10.6.5.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
sophos	cyberoam_cr25ing_utm_firmware	—	—

Detection & IOCs extracted from sources · hover to see the quote

path /corporate/webpages/dashboard/LicenseInformation.jsp↗

path /corporate/webpages/dashboard/ApplianceInformation.jsp↗

path /corporate/webpages/dashboard/IPSRecentAlerts.jsp↗

path /corporate/webpages/dashboard/HTTPVirusDetected.jsp↗

• → Detect unauthenticated or low-privileged direct GET requests to sensitive dashboard JSP endpoints under /corporate/webpages/dashboard/ — particularly LicenseInformation.jsp, ApplianceInformation.jsp, IPSRecentAlerts.jsp, and HTTPVirusDetected.jsp — which should only be accessible to admin-level users. ↗
• → Look for HTTP 200 responses to GET requests for /corporate/webpages/dashboard/*.jsp from sessions belonging to low-privileged users, indicating successful IDOR/direct object reference exploitation. ↗
• → Flag requests to dashboard JSP pages that include the X-Requested-With: XMLHttpRequest header but originate from non-admin session contexts, as the PoC uses AJAX-style requests to bypass access controls. ↗

• · The exploit requires the attacker to be authenticated (at least as a low-privileged user); purely unauthenticated access is not demonstrated. Detection rules should account for authenticated sessions with insufficient privilege. ↗
• · Many additional dashboard JSP URLs beyond the three listed are reportedly affected ('...Many others...'), so detection coverage should extend to the entire /corporate/webpages/dashboard/ path, not just the named files. ↗
• · Upgrading to version 10.6.5 eliminates this vulnerability; detections are relevant only for devices running 10.6.3 MR-5 or earlier. ↗

CVSS provenance

nvd v3.0 8.8 HIGH CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 9.0 CRITICAL AV:N/AC:L/Au:S/C:C/I:C/A:C

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