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CVE-2014-3553

CVE-2014-3553 is a CWE-264 vulnerability in moodle moodle. O3 Security detects and blocks CVE-2014-3553 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

mod/forum/classes/post_form.php in Moodle through 2.3.11, 2.4.x before 2.4.11, 2.5.x before 2.5.7, 2.6.x before 2.6.4, and 2.7.x before 2.7.1 does not enforce the moodle/site:accessallgroups…

Published
Jul 29, 2014
Updated
Jun 17, 2026
Affected
0 pkgs
Patched
None yet
Exploits
None indexed

Description

mod/forum/classes/post_form.php in Moodle through 2.3.11, 2.4.x before 2.4.11, 2.5.x before 2.5.7, 2.6.x before 2.6.4, and 2.7.x before 2.7.1 does not enforce the moodle/site:accessallgroups capability requirement before proceeding with a post to all groups, which allows remote authenticated users to bypass intended access restrictions by leveraging two or more group memberships.

Affected Products

1 product · 35 configurations
Application
moodlemoodle
≤ 2.3.11
34 versions
2.3.02.3.12.3.22.3.32.3.42.3.52.3.62.3.72.3.82.3.92.3.102.4.0

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every moodle moodle deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Remediation status

    No patch has shipped for CVE-2014-3553 yet — track the moodle moodle advisory for a fixed release and apply the workarounds below in the meantime.

  3. Mitigate without a patch

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2014-3553 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2014-3553. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

mod/forum/classes/post_form.php in Moodle through 2.3.11, 2.4.x before 2.4.11, 2.5.x before 2.5.7, 2.6.x before 2.6.4, and 2.7.x before 2.7.1 does not enforce the moodle/site:accessallgroups capability requirement before proceeding with a post to all groups, which allows remote authenticated users to bypass intended access restrictions by leveraging two or more group memberships.
O3 Security · Runtime Protection

Is CVE-2014-3553 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2014-3553 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.