CVE-2016-2831: canonical ubuntu_linux 7PK - Security Features
Vulnerability summary
CVE-2016-2831 is a high (CVSS 8.8) 7PK - Security Features vulnerability in canonical ubuntu_linux. EPSS estimates a 1.35% chance of exploitation in the next 30 days, higher than 71.4% of scored vulnerabilities.
Not severe (CVSS 8.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 10 · Related 6Timeline
- 13-06-2016PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 do not ensure that the user approves the fullscreen and pointerlock settings, which allows remote attackers to cause a denial of service (UI outage), or conduct clickjacking or spoofing attacks, via a crafted web site.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H
EPSS trend
Probability
1.35%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.35% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-2547PK - Security FeaturesSoftware security is not security software. Here we're concerned with topics like authentication, access control, confidentiality, cryptography, and privilege management.
- CWE-284Improper Access ControlThe product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Affected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- firefox-esr< 45.2.0esr-1
- debian_linuxEOL8.0
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 15.10 | 16.04
Mozilla1 product
- firefox45.1.0 | 45.1.1 | ≤ 46.0.1
Ubuntu1 product
- firefox< 47.0+build3-0ubuntu0.14.04.1 | < 47.0+build3-0ubuntu0.16.04.1
5 vendors · 7 products
References
16 links- lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlX Refsource CONFIRM
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
