Vulnerability Description
A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 79.0 |
| Mozilla | Firefox Esr | < 78.1 |
| Mozilla | Thunderbird | < 78.1 |
| Opensuse | Leap | 15.2 |
| Canonical | Ubuntu Linux | 16.04 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlMailing ListThird Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1645204Issue TrackingVendor Advisory
- https://usn.ubuntu.com/4443-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlMailing ListThird Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1645204Issue TrackingVendor Advisory
- https://usn.ubuntu.com/4443-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/Vendor Advisory
FAQ
What is CVE-2020-15655?
CVE-2020-15655 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affec...
How severe is CVE-2020-15655?
CVE-2020-15655 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-15655?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Opensuse Leap, Canonical Ubuntu Linux.