fw_dbus.py in system-config-firewall 1.2.29 and earlier uses the pickle Python module…
Priority LOW 34CWE-502Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-502.
Summary
fw_dbus.py in system-config-firewall 1.2.29 and earlier uses the pickle Python module unsafely during D-Bus communication between the GUI and the backend, which might allow local users to gain privileges via a crafted serialized object.
Why it matters now
EPSS 0.00421 36th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:redhat:system-config-firewall:*:*:*:*:*:*:*:* | up to 1.2.29 | Vulnerable | Red Hat |
| cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:* | 15 | Vulnerable | Fedoraproject |
- cpe:2.3:a:redhat:system-config-firewall:*:*:*:*:*:*:*:* Versions up to 1.2.29 Vulnerable ·Red Hat
- cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:* Versions 15 Vulnerable ·Fedoraproject
Remediation
Red Hat 1 advisory
- RHSA-2011:0953 Released 2011-07-18 · Red Hat rating Moderatesystem-config-firewall security update
- Red Hat Enterprise Linux Server (v. 6) system-config-firewall-1.2.27-3.el6_1.3, system-config-firewall-base-1.2.27-3.el6_1.3, system-config-firewall-tui-1.2.27-3.el6_1.3 +3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:0953 |
Timeline
- 2026-10-02 Threatist record created from CVE-2011-2520
- 2026-10-03 Alias added: GHSA-j359-qhq6-r897
References
Sources
- CVE-2011-2520 · CVE Program
- CVE-2011-2520 · NVD
- FIRST EPSS
- GHSA-j359-qhq6-r897 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-2520 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences