Vulnerability in Mozilla Firefox
CVE-2020-15652
By observing the stack trace for JavaScript errors in web workers, it was possible to leak the result of a cross-origin redirect. This applied only to content that can be parsed as script. This vulnerability affects Firefox < 79, Firefox ESR < 68.11, Firefox ESR < 78.1, Thunderbird < 68.11, 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:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.013 (68.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
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
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.mozilla.org/security/advisories/mfsa2020-30/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-35/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-32/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-33/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2020-31/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00022.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00032.html (vendor-advisory, Broken Link)
- usn.ubuntu.com/4443-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-15652?
- CVE-2020-15652 is a medium-severity vulnerability in Mozilla Firefox, classified under Origin Validation Error. CVSS score: 6.5/10. Published 2020-08-10.
- How severe is CVE-2020-15652?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-15652 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.