CVE-2015-5963

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-08-24 · updated 2026-06-17
Weakness: CWE-399

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

Canonical Ubuntu Linux: 12.04, 14.04, 15.04
Django: 1.4, 1.4.1, 1.4.2, 1.4.4, 1.4.5, 1.4.6 (+33)
Oracle Corporation Solaris Operating System: 11.3

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172084.html
http://lists.opensuse.org/opensuse-updates/2015-09/msg00026.html
http://lists.opensuse.org/opensuse-updates/2015-09/msg00035.html
http://rhn.redhat.com/errata/RHSA-2015-1766.html
http://rhn.redhat.com/errata/RHSA-2015-1767.html
http://rhn.redhat.com/errata/RHSA-2015-1894.html
http://www.debian.org/security/2015/dsa-3338
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
http://www.securityfocus.com/bid/76428
http://www.securitytracker.com/id/1033318
http://www.ubuntu.com/usn/USN-2720-1
https://access.redhat.com/errata/RHSA-2015:1876

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