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Fencer Intel
high 7.5

CVE-2015-5964 json

Denial-of-service possibility in logout() view by filling session store

published 2015-08-24 11 y ago modified 2026-06-17 4 mo ago also GHSA-x38m-486c-2wr9 , PYSEC-2015-23 , EUVD-2015-0012

cvss
7.5
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
5.1%
EPSS 5.1% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

The (1) contrib.sessions.backends.base.SessionBase.flush and (2) cache_db.SessionStore.flush functions in Django 1.7.x before 1.7.10, 1.4.x before 1.4.22, and possibly other versions create empty sessions in certain circumstances, which allows remote attackers to cause a denial of service (session store consumption) via unspecified vectors.

Patch / fix

  • pypi django 1.4.22, 1.7.10
  • python-django Debian 14, Debian 13, Debian 12 1.7.10-1

debian advisories DEBIAN-CVE-2015-5964

  • python-django Ubuntu 14.04 LTS 1.6.1-2ubuntu0.10

ubuntu advisories UBUNTU-CVE-2015-5964

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-django openstack 6, openstack 5 1.6.11-3.el7ost
  • python-django-bash-completion openstack 6, openstack 5 1.6.11-3.el7ost
  • python-django openstack 5 1.6.11-3.el6ost
  • python-django-bash-completion openstack 5 1.6.11-3.el6ost

red hat advisories RHSA-2015:1894RHSA-2015:1766RHSA-2015:1767

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-5964 updated cvss 5.0

python-django: Denial-of-service possibility in logout() view by filling session store

  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 python-django 1.6.11-3.el6ost, python-django-bash-completion 1.6.11-3.el6ost
    fixed: vendor fix RHSA-2015:1766
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 python-django 1.6.11-3.el7ost, python-django-bash-completion 1.6.11-3.el7ost
    fixed: vendor fix RHSA-2015:1767
  • Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 python-django 1.6.11-3.el7ost, python-django-bash-completion 1.6.11-3.el7ost
    fixed: vendor fix RHSA-2015:1894
  • Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) python-django, python-django-bash-completion
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.06% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
pypi django
>=1.7, <1.7.10
>=1.4, <1.4.22
1.7.10
1.4.22

Classification

Weakness
  • CWE-399 Resource Management Errors
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.