CVE-2020-15655
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 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1645204
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-32/
- https://www.mozilla.org/security/advisories/mfsa2020-30/
- https://www.mozilla.org/security/advisories/mfsa2020-32/
- https://www.mozilla.org/security/advisories/mfsa2020-33/
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html
- https://usn.ubuntu.com/4443-1/
- https://launchpad.net/bugs/cve/CVE-2020-15655
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-32/#CVE-2020-15653
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-33/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-30/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-32/#CVE-2020-15655
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-33/#CVE-2020-15655
- https://security-tracker.debian.org/tracker/CVE-2020-15655
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15655
- https://nvd.nist.gov/vuln/detail/CVE-2020-15655
- https://ubuntu.com/security/CVE-2020-15655
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2020-15655.
Who discovered this vulnerability?
Mozilla Developer Rob Wu discovered this vulnerability.
What is the impact of this vulnerability?
This vulnerability could bypass existing CORS checks, leading to potential disclosure of cross-origin information.
Which software products are affected by this vulnerability?
Firefox ESR 78.1, Thunderbird 78.1, and Firefox 79 are affected by this vulnerability.
What is the severity of CVE-2020-15655?
The severity of CVE-2020-15655 is high (7.0).
How can I fix this vulnerability?
Update Firefox ESR to version 78.1, Thunderbird to version 78.1, or Firefox to version 79 to fix this vulnerability.
- collector/mozilla-advisory
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- source/Mozilla
- agent/software-canonical-lookup
- agent/severity
- agent/software-canonical-lookup-request
- collector/nvd-cve
- source/NVD
- collector/nvd-index
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/tags
- agent/description
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/trending
- vendor/mozilla
- canonical/mozilla firefox esr
- canonical/mozilla thunderbird
- canonical/mozilla firefox
- vendor/opensuse
- canonical/opensuse leap
- version/opensuse leap/15.2
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- version/canonical ubuntu linux/20.04
- package-manager/debian