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CVE-2008-1393

CVE-2008-1393 is a CWE-255 vulnerability in plone plone cms. 2 public exploit references exist, so weaponization risk is real. O3 Security detects and blocks CVE-2008-1393 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

Plone CMS 3.0.5, and probably other 3.x versions, places a base64 encoded form of the username and password in the __ac cookie for the admin account, which makes it easier for remote…

Published
Mar 20, 2008
Updated
Jun 16, 2026
Affected
0 pkgs
Patched
None yet
Exploits
2 known

Description

Plone CMS 3.0.5, and probably other 3.x versions, places a base64 encoded form of the username and password in the __ac cookie for the admin account, which makes it easier for remote attackers to obtain administrative privileges by sniffing the network.

Affected Products

1 product · 2 configurations
Application
plone cmsplone
≤ 3.0.5
range
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every plone plone cms 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-2008-1393 yet — track the plone plone cms 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-2008-1393 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-2008-1393. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Plone CMS 3.0.5, and probably other 3.x versions, places a base64 encoded form of the username and password in the __ac cookie for the admin account, which makes it easier for remote attackers to obtain administrative privileges by sniffing the network.
O3 Security · Runtime Protection

Is CVE-2008-1393 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2008-1393 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.