bindings: Internal entity expansion in Python XML libraries inflicts DoS vulnerabilities
Published Apr 3, 2013
5.0
MEDIUMCVSS 2.0
EPSS 4.90%
Description
The XML libraries for Python 3.4, 3.3, 3.2, 3.1, 2.7, and 2.6, as used in OpenStack Keystone Essex, Folsom, and Grizzly; Compute (Nova) Essex and Folsom; Cinder Folsom; Django; and possibly other products allow remote attackers to cause a denial of service (resource consumption and crash) via an XML Entity Expansion (XEE) attack.
Affected products
No data.
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No data.
OpenStack Folsom for RHEL 6
Django14-0:1.4.4-1.el6ost
Fixed · RHSA-2013:0670
OpenStack Folsom for RHEL 6
openstack-cinder-0:2012.2.3-4.el6ost
Fixed · RHSA-2013:0658
OpenStack Folsom for RHEL 6
openstack-keystone-0:2012.2.3-3.el6ost
Fixed · RHSA-2013:0596
OpenStack Folsom for RHEL 6
openstack-nova-0:2012.2.3-4.el6ost
Fixed · RHSA-2013:0657
Red Hat Enterprise Linux 5
python
Will not fix
Red Hat Enterprise Linux 6
python
Will not fix
Red Hat Enterprise Linux 7
python
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| OpenStack Folsom for RHEL 6 | Django14-0:1.4.4-1.el6ost | Fixed | RHSA-2013:0670 |
| OpenStack Folsom for RHEL 6 | openstack-cinder-0:2012.2.3-4.el6ost | Fixed | RHSA-2013:0658 |
| OpenStack Folsom for RHEL 6 | openstack-keystone-0:2012.2.3-3.el6ost | Fixed | RHSA-2013:0596 |
| OpenStack Folsom for RHEL 6 | openstack-nova-0:2012.2.3-4.el6ost | Fixed | RHSA-2013:0657 |
| Red Hat Enterprise Linux 5 | python | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | python | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | python | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of python as shipped with Red Hat Enterprise Linux 5, 6 and 7. Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 2, 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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.90% (0.04903) | 91.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.86% (0.04863) | 90.88th | v5 (v2026.06.15) |
| Aug 20, 2025 | 3.26% (0.03256) | 86.62th | v4 (v2025.03.14) |
| Jul 13, 2025 | 5.14% (0.05143) | 89.40th | v4 (v2025.03.14) |
| Jul 12, 2025 | 2.18% (0.02183) | 83.66th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.65% (0.03646) | 86.76th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.84% (0.06842) | 85.22th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.65% (0.03646) | 87.06th | v4 (v2025.03.14) |
| Dec 12, 2024 | 8.96% (0.08963) | 94.86th | v3 (v2023.03.01) |
| Dec 19, 2023 | 8.96% (0.08963) | 93.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 7.70% (0.07696) | 93.10th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (17)
- http://blog.python.org/2013/02/announcing-defusedxml-fixes-for-xml.html x_refsource_CONFIRM
- http://bugs.python.org/issue17239 x_refsource_CONFIRM
- http://lists.openstack.org/pipermail/openstack-announce/2013-February/000078.html mailing-listx_refsource_MLISTVendor Advisory
- http://rhn.redhat.com/errata/RHSA-2013-0657.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-0658.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-0670.html vendor-advisoryx_refsource_REDHAT
- http://ubuntu.com/usn/usn-1757-1 vendor-advisoryx_refsource_UBUNTU
- http://www.openwall.com/lists/oss-security/2013/02/19/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2013/02/19/4 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2013-1664 Vendor Advisory
- https://bugs.launchpad.net/nova/+bug/1100282 x_refsource_CONFIRMExploit
- https://bugzilla.redhat.com/show_bug.cgi?id=913808 Issue Tracking
- https://github.com/advisories/GHSA-qrh7-x6fp-c2mp Advisory
- https://github.com/django/django/commit/1c60d07ba23e0350351c278ad28d0bd5aa410b40
- https://github.com/django/django/commit/d19a27066b2247102e65412aa66917aff0091112
- https://nvd.nist.gov/vuln/detail/CVE-2013-1664
- https://www.cve.org/CVERecord?id=CVE-2013-1664
Change history (0)
No recorded changes yet.