- Vulnerability/
- USN-3717-1
USN-3717-1: PolicyKit vulnerabilities
First published: Mon Jul 16 2018(Updated: )
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. (CVE-2015-3218) 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. (CVE-2015-3255) Tavis Ormandy discovered that PolicyKit incorrectly handled duplicate cookie values. 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. (CVE-2015-4625) Matthias Gerstner discovered that PolicyKit incorrectly checked users. A local attacker could possibly use this issue to cause authentication dialogs to show up for other users, leading to a denial of service or an information leak. (CVE-2018-1116)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/libpolkit-backend-1-0 | <0.105-20ubuntu0.18.04.1 | 0.105-20ubuntu0.18.04.1 |
| =18.04 | ||
| All of | ||
| ubuntu/libpolkit-backend-1-0 | <0.105-18ubuntu0.1 | 0.105-18ubuntu0.1 |
| =17.10 | ||
| All of | ||
| ubuntu/libpolkit-backend-1-0 | <0.105-14.1ubuntu0.1 | 0.105-14.1ubuntu0.1 |
| =16.04 | ||
| All of | ||
| ubuntu/libpolkit-backend-1-0 | <0.105-4ubuntu3.14.04.2 | 0.105-4ubuntu3.14.04.2 |
| =14.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2015-3218
- https://ubuntu.com/security/CVE-2015-3255
- https://ubuntu.com/security/CVE-2015-4625
- https://ubuntu.com/security/CVE-2018-1116
- https://ubuntu.com/security/notices/USN-3717-2
- https://launchpad.net/ubuntu/+source/policykit-1/0.105-20ubuntu0.18.04.1
- https://launchpad.net/ubuntu/+source/policykit-1/0.105-18ubuntu0.1
- https://launchpad.net/ubuntu/+source/policykit-1/0.105-14.1ubuntu0.1
- https://launchpad.net/ubuntu/+source/policykit-1/0.105-4ubuntu3.14.04.2
- https://ubuntu.com/security/notices/USN-3717-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID for this advisory?
The vulnerability ID for this advisory is CVE-2015-3218.
Which version of PolicyKit is affected?
PolicyKit versions 0.105-20ubuntu0.18.04.1, 0.105-18ubuntu0.1, 0.105-14.1ubuntu0.1, and 0.105-4ubuntu3.14.04.2 are affected.
What is the impact of this vulnerability?
An attacker could use this vulnerability to cause PolicyKit to crash, resulting in a denial of service.
How can I fix this vulnerability on Ubuntu 18.04?
To fix this vulnerability on Ubuntu 18.04, update libpolkit-backend-1-0 package to version 0.105-20ubuntu0.18.04.1.
Where can I find more information about this vulnerability?
You can find more information about this vulnerability on the Ubuntu Security website.
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