CVE-2018-5168: canonical ubuntu_linux
Vulnerability summary
CVE-2018-5168 is a medium (CVSS 5.3) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.33% chance of exploitation in the next 30 days, higher than 83.2% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 21 · Related 10Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Sites can bypass security checks on permissions to install lightweight themes by manipulating the "baseURI" property of the theme element. This could allow a malicious site to install a theme without user interaction which could contain offensive or embarrassing images. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS trend
Probability
2.33%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
-0.05 pp
From 2.38% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Redhat6 products
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_server_aus7.6
- enterprise_linux_server_eus7.5 | 7.6
- enterprise_linux_server_tus7.6
Mozilla4 products
- firefox≥ unspecified, < 60 | < 52.8.0 | < 60.0
- firefox_esr≥ unspecified, < 52.8
- thunderbird≥ unspecified, < 52.8 | < 52.8.0
- thunderbird_esr≥ unspecified, < 52.8 | < 52.8.0
Debian3 products
- firefox-esr< 52.8.0esr-1
- thunderbird< 1:52.8.0-1
- debian_linuxEOL7.0 | 8.0 | 9.0
Ubuntu2 products
- firefox< 60.0+build2-0ubuntu0.14.04.1 | < 60.0+build2-0ubuntu0.16.04.1 | < 60.0+build2-0ubuntu1
- thunderbird< 1:52.8.0+build1-0ubuntu0.14.04.1 | < 1:52.8.0+build1-0ubuntu0.16.04.1 | < 1:52.8.0+build1-0ubuntu0.18.04.1
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 17.10 | 18.04
5 vendors · 16 products
References
25 linksShow all 25 references
lists.debian.org/debian-lts-announce/2018/05/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2018/05/msg00007.htmlMailing ListX Refsource MLISTThird Party Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1449548X Refsource CONFIRMIssue TrackingPermissions RequiredVendor Advisory