CVE-2018-5131: canonical ubuntu_linux
Vulnerability summary
CVE-2018-5131 is a medium (CVSS 5.9) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.25% chance of exploitation in the next 30 days, higher than 82.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 11 · Related 5Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Under certain circumstances the "fetch()" API can return transient local copies of resources that were sent with a "no-store" or "no-cache" cache header instead of downloading a copy from the network as it should. This can result in previously stored, locally cached data of a website being accessible to users if they share a common profile while browsing. This vulnerability affects Firefox ESR < 52.7 and Firefox < 59.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
2.25%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
-0.05 pp
From 2.29% 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 causeAffected systems
Redhat5 products
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_server_aus7.4
- enterprise_linux_server_eus7.4 | 7.5
- enterprise_linux_workstation6.0 | 7.0
Debian2 products
- firefox-esr< 52.7.0esr-1
- debian_linuxEOL7.0 | 8.0 | 9.0
Mozilla2 products
- firefox≥ unspecified, < 59 | < 59.0 | < 52.7.0
- firefox_esr≥ unspecified, < 52.7
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 17.10
Ubuntu1 product
- firefox< 59.0+build5-0ubuntu0.14.04.1 | < 59.0+build5-0ubuntu0.16.04.1 | < 59.0.1+build1-0ubuntu1
5 vendors · 11 products
References
16 links
- lists.debian.org/debian-lts-announce/2018/03/msg00010.htmlMailing ListX Refsource MLISTThird Party Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1440775X Refsource CONFIRMIssue TrackingPermissions RequiredThird Party Advisory