NULL pointer dereference in polkit - CVE-2015-3218
Published: October 26, 2015 / Updated: July 28, 2020
Vulnerability identifier: #VU32033
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-3218
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Freedesktop.org
Affected software:
polkit
polkit
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in polkitbackend/polkitbackendinteractiveauthority.c in PolicyKit (aka polkit) before 0.113 allows local users to cause a denial of service (NULL pointer dereference and polkitd daemon crash) by calling RegisterAuthenticationAgent with an invalid object path. <a href="http://cwe.mitre.org/data/definitions/476. A remote attacker can perform a denial of service (DoS) attack.
How to mitigate CVE-2015-3218
Update to version 0.113.
Sources
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161721.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162294.html
- http://lists.freedesktop.org/archives/polkit-devel/2015-July/000432.html
- http://lists.freedesktop.org/archives/polkit-devel/2015-May/000420.html
- http://lists.freedesktop.org/archives/polkit-devel/2015-May/000421.html
- http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00010.html
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00042.html
- http://www.securityfocus.com/bid/76086
- http://www.securitytracker.com/id/1035023
- https://usn.ubuntu.com/3717-1/