CVE-2018-1116: canonical ubuntu_linux Improper Authorization
Vulnerability summary
CVE-2018-1116 is a medium (CVSS 4.7) Improper Authorization vulnerability in canonical ubuntu_linux. EPSS estimates a 1.20% chance of exploitation in the next 30 days, higher than 67.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 10-07-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in polkit before version 0.116. The implementation of the polkit_backend_interactive_authority_check_authorization function in polkitd allows to test for authentication and trigger authentication of unrelated processes owned by other users. This may result in a local DoS and information disclosure.
CVSS metrics
8 scores · 5 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated4.4MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
- OSV · DebianEcosystem advisory · calculated4.4MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
- NVDNIST4.7MediumCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
- OSV · Red hatEcosystem advisory · calculated4.4MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:LDiffers
- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HDiffers
EPSS trend
Probability
1.20%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
0.00 pp
From 1.20% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-285Improper AuthorizationThe product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
- CWE-862Missing AuthorizationThe product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Affected systems
Suse6 products
- polkit&distro=SUSE Linux Enterprise Desktop 12 SP3< 0.113-5.9.1
- polkit&distro=SUSE Linux Enterprise Module for Basesystem 15< 0.114-3.3.1
- polkit&distro=SUSE Linux Enterprise Server 12 SP3< 0.113-5.9.1
- polkit&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP3< 0.113-5.9.1
- polkit&distro=SUSE Linux Enterprise Software Development Kit 12 SP3< 0.113-5.9.1
Redhat4 products
- polkit< 0:0.112-26.el7
- polkit-debuginfo< 0:0.112-26.el7
- polkit-devel< 0:0.112-26.el7
- polkit-docs< 0:0.112-26.el7
Debian2 products
- policykit-1< 0.105-21 | < 0.105-15~deb8u3
- debian_linuxEOL8.0
[unknown]1 product
- polkitpolkit 0.116
Canonical1 product
- ubuntu_linuxEOL12.04
Polkit_project1 product
- polkit< 0.115
Ubuntu1 product
- policykit-1< 0.105-4ubuntu3.14.04.2 | < 0.105-14.1ubuntu0.1 | < 0.105-20ubuntu0.18.04.1
7 vendors · 16 products
References
23 links
lists.debian.org/debian-lts-announce/2018/07/msg00042.htmlMailing ListX Refsource MLISTThird Party Advisory
