Vulnerability in Mozilla Firefox
CVE-2020-15653
An iframe sandbox element with the allow-popups flag could be bypassed when using noopener links. This could have led to security issues for websites relying on sandbox configurations that allowed popups and hosted arbitrary content. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.014 · change: +0.002
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions unspecified
- Canonical Ubuntu Linux — versions 16.04, 18.04, 20.04
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2020-30/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-32/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-33/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking, Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4443-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15653?
- CVE-2020-15653 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 6.5/10. Published 2020-08-10.
- How severe is CVE-2020-15653?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-15653 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.