Vulnerability in Mozilla Firefox
CVE-2018-5168
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.024 (83.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
- Mozilla Thunderbird Esr — versions unspecified
- Mozilla Thunderbird Esr
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10
- Debian Linux — versions 7.0, 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.6
References
- access.redhat.com/errata/RHSA-2018:1415 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201810-01 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:1726 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:1414 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201811-13 (vendor-advisory, Third Party Advisory)
- www.mozilla.org/security/advisories/mfsa2018-13/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2018-11/ (Vendor Advisory)
- usn.ubuntu.com/3660-1/ (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1040896 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2018/dsa-4199 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-5168?
- CVE-2018-5168 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 5.3/10. Published 2018-06-11.
- How severe is CVE-2018-5168?
- Medium severity. CVSS v3 base score is 5.3 out of 10.