python-django: Denial-of-service possibility in logout() view by filling session store
Published Aug 24, 2015
6.6
MEDIUMCVSS 4.0
EPSS 5.21%
Description
contrib.sessions.middleware.SessionMiddleware in Django 1.8.x before 1.8.4, 1.7.x before 1.7.10, 1.4.x before 1.4.22, and possibly other versions allows remote attackers to cause a denial of service (session store consumption or session record removal) via a large number of requests to contrib.auth.views.logout, which triggers the creation of an empty session record.
Affected products
No data.
Configuration 1
- 1.4
- 1.4.1
- 1.4.2
- 1.4.4
- 1.4.5
- 1.4.6
- 1.4.7
- 1.4.8
- 1.4.9
- 1.4.10
- 1.4.11
- 1.4.12
- 1.4.13
- 1.4.14
- 1.4.17
- 1.4.19
- 1.4.20
- 1.4.21
- 1.7
- 1.7
- 1.7
- 1.7
- 1.7
- 1.7
- 1.7
- 1.7.1
- 1.7.2
- 1.7.3
- 1.7.4
- 1.7.5
- 1.7.6
- 1.7.7
- 1.7.8
- 1.7.9
- 1.8
- 1.8.0
- 1.8.1
- 1.8.2
- 1.8.3
Configuration 3
- 12.04
- 14.04
- 15.04
No data.
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6
python-django-0:1.6.11-3.el6ost
Fixed · RHSA-2015:1766
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7
python-django-0:1.6.11-3.el7ost
Fixed · RHSA-2015:1767
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7
python-django-0:1.6.11-3.el7ost
Fixed · RHSA-2015:1894
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7
python-django-0:1.8.4-1.el7
Fixed · RHSA-2015:1876
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 | python-django-0:1.6.11-3.el6ost | Fixed | RHSA-2015:1766 |
| Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 | python-django-0:1.6.11-3.el7ost | Fixed | RHSA-2015:1767 |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | python-django-0:1.6.11-3.el7ost | Fixed | RHSA-2015:1894 |
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | python-django-0:1.8.4-1.el7 | Fixed | RHSA-2015:1876 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 5.21% (0.05206) | 92.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.16% (0.05163) | 91.33th | v5 (v2026.06.15) |
| Jun 3, 2026 | 7.08% (0.07079) | 91.67th | v4 (v2025.03.14) |
| Sep 10, 2025 | 5.74% (0.05738) | 90.10th | v4 (v2025.03.14) |
| Jun 19, 2025 | 8.13% (0.08126) | 91.72th | v4 (v2025.03.14) |
| Jun 13, 2025 | 5.93% (0.05934) | 90.14th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.55% (0.07554) | 91.00th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.50% (0.04503) | 81.51th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.55% (0.07554) | 91.20th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.35% (0.02355) | 90.19th | v3 (v2023.03.01) |
| Jun 16, 2023 | 2.35% (0.02355) | 88.24th | v3 (v2023.03.01) |
| Apr 11, 2023 | 2.04% (0.02044) | 87.26th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.91% (0.01913) | 86.70th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
References (26)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172084.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-updates/2015-09/msg00026.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-09/msg00035.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2015-1766.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2015-1767.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2015-1894.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3338 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/76428 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033318 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2720-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/errata/RHSA-2015:1876 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2015-5963 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1252890 Issue Tracking
- https://github.com/advisories/GHSA-pgxh-wfw4-jx2v Advisory
- https://github.com/django/django/blob/4555a823fd57e261e1b19c778429473256c8ea08/docs/releases/1.8.4.txt#L9-L21
- https://github.com/django/django/commit/2eb86b01d7b59be06076f6179a454d0fd0afaff6
- https://github.com/django/django/commit/2f5485346ee6f84b4e52068c04e043092daf55f7
- https://github.com/django/django/commit/575f59f9bc7c59a5e41a081d1f5f55fc859c5012
- https://github.com/django/django/commit/8cc41ce7a7a8f6bebfdd89d5ab276cd0109f4fc5
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2015-22.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2015-5963
- https://web.archive.org/web/20150904151934/http://www.securitytracker.com/id/1033318
- https://web.archive.org/web/20200228050526/http://www.securityfocus.com/bid/76428
- https://www.cve.org/CVERecord?id=CVE-2015-5963
- https://www.djangoproject.com/weblog/2015/aug/18/security-releases x_refsource_MISCPatchVendor Advisory
Change history (0)
No recorded changes yet.