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CVE-2013-2191

CVE-2013-2191 is a Improper Input Validation vulnerability in fedoraproject fedora. O3 Security detects and blocks CVE-2013-2191 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

python-bugzilla before 0.9.0 does not validate X.509 certificates, which allows man-in-the-middle attackers to spoof Bugzilla servers via a crafted certificate.

Published
Feb 8, 2014
Updated
Jun 16, 2026
Affected
0 pkgs
Patched
None yet
Exploits
None indexed

Description

python-bugzilla before 0.9.0 does not validate X.509 certificates, which allows man-in-the-middle attackers to spoof Bugzilla servers via a crafted certificate.

Affected Products

3 products · 10 configurations
OS
fedorafedoraproject
2 versions
1718
OS
opensuseopensuse
3 versions
11.412.212.3
Application
python-bugzillapython_bugzilla_project
≤ 0.8.0
4 versions
0.6.00.6.10.6.20.7.0

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every fedoraproject fedora 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-2013-2191 yet — track the fedoraproject fedora 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-2013-2191 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-2013-2191. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

python-bugzilla before 0.9.0 does not validate X.509 certificates, which allows man-in-the-middle attackers to spoof Bugzilla servers via a crafted certificate.
O3 Security · Runtime Protection

Is CVE-2013-2191 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2013-2191 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.