NULL pointer dereference in polkit - CVE-2015-3218

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Main Vulnerability Database Vulnerabilities #VU32033

NULL pointer dereference in polkit - CVE-2015-3218

Published: October 26, 2015 / Updated: July 28, 2020


Vulnerability identifier: #VU32033
CSH Severity: Low
CVSS v4: 5.1 [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]
CVE-ID: CVE-2015-3218
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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.


Affected software

polkit
polkit (Alpine package)
linux-firmware (Alpine package)

How to mitigate CVE-2015-3218

Update to version 0.113.

polkit - update to 0.113
polkit (Alpine package) - addressed in versions 0.105-r3, 0.105-r4
linux-firmware (Alpine package) - update to 20180615-r2

External References

Related Security Bulletins