CVE-2020-6823
published 2020-04-24CVE-2020-6823: A malicious extension could have called browser.identity.launchWebAuthFlow, controlling the redirect_uri, and through the Promise returned, obtain the Auth…
PriorityP350critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
1.61%
72.9th percentile
A malicious extension could have called browser.identity.launchWebAuthFlow, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider. This vulnerability affects Firefox < 75.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 75.0-1 (sid) | firefox 75.0-1 (sid) |
| mozilla | firefox | < 75.0 | 75.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= 0 < 75.0+build3-0ubuntu0.16.04.1 | 75.0+build3-0ubuntu0.16.04.1 |
| mozilla | firefox | >= 0 < 75.0+build3-0ubuntu0.18.04.1 | 75.0+build3-0ubuntu0.18.04.1 |
| mozilla | firefox | >= 0 < 75.0+build3-0ubuntu1 | 75.0+build3-0ubuntu1 |
| mozilla | firefox | >= unspecified < 75 | 75 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv9.8CRITICAL
vendor_debian9.8CRITICAL
vendor_redhat9.8CRITICAL
vendor_ubuntu7.5HIGH
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GHSA
GHSA-cm6f-xjjv-f446: A malicious extension could have called browser
ghsa_unreviewed·2022-05-24
CVE-2020-6823 [CRITICAL] CWE-269 GHSA-cm6f-xjjv-f446: A malicious extension could have called browser
A malicious extension could have called browser.identity.launchWebAuthFlow, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider. This vulnerability affects Firefox < 75.
OSV
CVE-2020-6823: A malicious extension could have called browser
osv·2020-04-07·CVSS 9.8
CVE-2020-6823 [CRITICAL] CVE-2020-6823: A malicious extension could have called browser
A malicious extension could have called browser.identity.launchWebAuthFlow, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider. This vulnerability affects Firefox < 75.
OSV
firefox vulnerabilities
osv·2020-04-07·CVSS 7.5
CVE-2020-6821 [HIGH] firefox vulnerabilities
firefox vulnerabilities
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, or execute arbitrary code. (CVE-2020-6821, CVE-2020-6822,
CVE-2020-6824, CVE-2020-6825, CVE-2020-6826)
It was discovered that extensions could obtain auth codes from OAuth login
flows in some circumstances. If a user were tricked in to installing a
specially crafted extension, an attacker could potentially exploit this to
obtain access to the user's account. (CVE-2020-6823)
Red Hat
Mozilla: Malicious Extension could obtain auth codes from OAuth login flows
vendor_redhat·2020-04-10·CVSS 9.8
CVE-2020-6823 [CRITICAL] CWE-358 Mozilla: Malicious Extension could obtain auth codes from OAuth login flows
Mozilla: Malicious Extension could obtain auth codes from OAuth login flows
A malicious extension could have called browser.identity.launchWebAuthFlow, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider. This vulnerability affects Firefox < 75.
The Mozilla Foundation Security Advisory describes this flaw as:
A malicious extension could have called `browser.identity.launchWebAuthFlow`, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider.
Package: firefox (Red Hat Enterprise Linux 5) - Will not fix
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: firefox (Red Hat Enterpr
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2020-04-07·CVSS 7.5
CVE-2020-6821 [HIGH] Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Firefox could be made to crash or run programs as your login if it
opened a malicious website.
Multiple security issues were discovered in Firefox. If a user were
tricked in to opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, obtain sensitive
information, or execute arbitrary code. (CVE-2020-6821, CVE-2020-6822,
CVE-2020-6824, CVE-2020-6825, CVE-2020-6826)
It was discovered that extensions could obtain auth codes from OAuth login
flows in some circumstances. If a user were tricked in to installing a
specially crafted extension, an attacker could potentially exploit this to
obtain access to the user's account. (CVE-2020-6823)
Instructions: After a standard system update you need to rest
Debian
CVE-2020-6823: firefox - A malicious extension could have called <code>browser.identity.launchWebAuthFlow...
vendor_debian·2020·CVSS 9.8
CVE-2020-6823 [CRITICAL] CVE-2020-6823: firefox - A malicious extension could have called <code>browser.identity.launchWebAuthFlow...
A malicious extension could have called browser.identity.launchWebAuthFlow, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user's account at the service provider. This vulnerability affects Firefox < 75.
Scope: local
sid: resolved (fixed in 75.0-1)
Mozilla
Mozilla Foundation Security Advisory 2020-12: CVE-2020-6823
vendor_mozilla·CVSS 9.8
CVE-2020-6823 [CRITICAL] Mozilla Foundation Security Advisory 2020-12: CVE-2020-6823
Mozilla Foundation Security Advisory 2020-12
CVE: CVE-2020-6823
Product: Firefox
Impact: high
Fixed in: Firefox 75
No detection rules found.
No public exploits indexed.
2020-04-24
Published