First published: Tue Jul 28 2020(Updated: )
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.
Credit: security@mozilla.org security@mozilla.org
Affected Software | Affected Version | How to fix |
---|---|---|
Mozilla Firefox ESR | <78.1 | 78.1 |
Mozilla Thunderbird | <78.1 | 78.1 |
Mozilla Firefox | <79 | 79 |
Mozilla Firefox | <79.0 | |
Mozilla Firefox ESR | <78.1 | |
Mozilla Thunderbird | <78.1 | |
openSUSE Leap | =15.2 | |
Canonical Ubuntu Linux | =16.04 | |
Canonical Ubuntu Linux | =18.04 | |
Canonical Ubuntu Linux | =20.04 | |
debian/firefox | 132.0.2-1 | |
debian/thunderbird | 1:115.12.0-1~deb11u1 1:128.4.0esr-1~deb11u1 1:115.16.0esr-1~deb12u1 1:128.4.0esr-1~deb12u1 1:128.4.2esr-1 1:128.4.3esr-1 |
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
(Found alongside the following vulnerabilities)
The vulnerability ID for this vulnerability is CVE-2020-15655.
Mozilla Developer Rob Wu discovered this vulnerability.
This vulnerability could bypass existing CORS checks, leading to potential disclosure of cross-origin information.
Firefox ESR 78.1, Thunderbird 78.1, and Firefox 79 are affected by this vulnerability.
The severity of CVE-2020-15655 is high (7.0).
Update Firefox ESR to version 78.1, Thunderbird to version 78.1, or Firefox to version 79 to fix this vulnerability.