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CVE-2015-3218

Status Candidate

Overview

The authentication_agent_new function 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.

Related Files

Ubuntu Security Notice USN-3717-1
Posted Jul 16, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3717-1 - Tavis Ormandy discovered that PolicyKit incorrectly handled certain invalid object paths. A local attacker could possibly use this issue to cause PolicyKit to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS. It was discovered that PolicyKit incorrectly handled certain duplicate action IDs. A local attacker could use this issue to cause PolicyKit to crash, resulting in a denial of service, or possibly escalate privileges. This issue only affected Ubuntu 14.04 LTS. Various other issues were also addressed.

tags | advisory, denial of service, local
systems | linux, ubuntu
advisories | CVE-2015-3218, CVE-2015-3255, CVE-2015-4625, CVE-2018-1116
MD5 | bb26c8309333e7b82004f400f1d0c1c2
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