8.8
HIGH
CVE-2018-6553
CUPS Linux Privilege Escalation Due to Insecure Hard Links in AppArmor Profile
Description

The CUPS AppArmor profile incorrectly confined the dnssd backend due to use of hard links. A local attacker could possibly use this issue to escape confinement. This flaw affects versions prior to 2.2.7-1ubuntu2.1 in Ubuntu 18.04 LTS, prior to 2.2.4-7ubuntu3.1 in Ubuntu 17.10, prior to 2.1.3-4ubuntu0.5 in Ubuntu 16.04 LTS, and prior to 1.7.2-0ubuntu1.10 in Ubuntu 14.04 LTS.

INFO

Published Date :

Aug. 10, 2018, 3:29 p.m.

Last Modified :

Oct. 3, 2019, 12:03 a.m.

Remotely Exploitable :

No

Impact Score :

6.0

Exploitability Score :

2.0
Affected Products

The following products are affected by CVE-2018-6553 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Canonical ubuntu_linux
1 Debian debian_linux
1 Cups cups
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-6553.

URL Resource
https://lists.debian.org/debian-lts-announce/2018/07/msg00014.html Issue Tracking Mailing List Third Party Advisory
https://security.gentoo.org/glsa/201908-08
https://usn.ubuntu.com/usn/usn-3713-1 Third Party Advisory
https://www.debian.org/security/2018/dsa-4243 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-6553 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-6553 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-264 CWE-264 NVD-CWE-noinfo
  • CVE Modified by [email protected]

    Aug. 15, 2019

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201908-08 [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 10, 2018

    Action Type Old Value New Value
    Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/07/msg00014.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/07/msg00014.html Issue Tracking, Mailing List, Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/usn/usn-3713-1 No Types Assigned https://usn.ubuntu.com/usn/usn-3713-1 Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2018/dsa-4243 No Types Assigned https://www.debian.org/security/2018/dsa-4243 Third Party Advisory
    Added CWE CWE-264
    Added CPE Configuration OR *cpe:2.3:a:cups:cups:-:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Aug. 12, 2018

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2018/dsa-4243 [No Types Assigned]
    Added Reference https://lists.debian.org/debian-lts-announce/2018/07/msg00014.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-6553 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-6553 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.05635

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability