system-config-firewall: privilege escalation flaw via use of python pickle
Published Jul 21, 2011
7.8
HIGHCVSS 3.1
EPSS 0.42%
Description
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.
Affected products
No data.
Configuration 1
- ≤ 1.2.29
Configuration 2
- 15
No data.
Red Hat Enterprise Linux 6
system-config-firewall-0:1.2.27-3.el6_1.3
Fixed · RHSA-2011:0953
Red Hat Enterprise Linux 6
system-config-printer-0:1.1.16-17.el6_1.2
Fixed · RHSA-2011:0953
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | system-config-firewall-0:1.2.27-3.el6_1.3 | Fixed | RHSA-2011:0953 |
| Red Hat Enterprise Linux 6 | system-config-printer-0:1.1.16-17.el6_1.2 | Fixed | RHSA-2011:0953 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:S/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.42% (0.00421) | 34.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.42% (0.00421) | 33.44th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00057) | 15.11th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.10% (0.01104) | 53.53th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.28% (0.01282) | 67.60th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.10% (0.01104) | 52.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.10% (0.01104) | 50.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
References (11)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063314.html vendor-advisoryx_refsource_FEDORAMailing List
- http://secunia.com/advisories/45294 third-party-advisoryx_refsource_SECUNIANot Applicable
- http://securitytracker.com/id?1025793 vdb-entryx_refsource_SECTRACKBroken Link
- http://www.openwall.com/lists/oss-security/2011/07/18/6 mailing-listx_refsource_MLISTMailing List
- http://www.redhat.com/support/errata/RHSA-2011-0953.html vendor-advisoryx_refsource_REDHATNot Applicable
- http://www.securityfocus.com/bid/48715 vdb-entryx_refsource_BIDBroken Link
- https://access.redhat.com/security/cve/CVE-2011-2520 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=717985 x_refsource_CONFIRMIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/68734 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2011-2520
- https://www.cve.org/CVERecord?id=CVE-2011-2520
| Link | Providers | Tags |
|---|---|---|
| http://lists.fedoraproject.org/pipermail/package-announce/2011-August/063314.html | vendor-advisoryx_refsource_FEDORAMailing List | |
| http://secunia.com/advisories/45294 | third-party-advisoryx_refsource_SECUNIANot Applicable | |
| http://securitytracker.com/id?1025793 | vdb-entryx_refsource_SECTRACKBroken Link | |
| http://www.openwall.com/lists/oss-security/2011/07/18/6 | mailing-listx_refsource_MLISTMailing List | |
| http://www.redhat.com/support/errata/RHSA-2011-0953.html | vendor-advisoryx_refsource_REDHATNot Applicable | |
| http://www.securityfocus.com/bid/48715 | vdb-entryx_refsource_BIDBroken Link | |
| https://access.redhat.com/security/cve/CVE-2011-2520 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=717985 | x_refsource_CONFIRMIssue Tracking | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/68734 | vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-2520 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-2520 |
Change history (0)
No recorded changes yet.