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CVE-2020-26976

Status Candidate

Overview

When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former, the service worker could have intercepted the request for the secure page despite the iframe not being a secure context due to the (insecure) framing. This vulnerability affects Firefox < 84.

Related Files

Red Hat Security Advisory 2021-0397-01
Posted Feb 3, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0397-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.7.0. Issues addressed include an information leakage vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-15685, CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | 99a439d8c05f33dc51800978dab21d53
Gentoo Linux Security Advisory 202102-02
Posted Feb 1, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202102-2 - Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code. Versions less than 78.7.0 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-15685, CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | ebc98d5b25ce0c41703e4d2f27db7413
Red Hat Security Advisory 2021-0299-01
Posted Jan 29, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0299-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.7.0. Issues addressed include an information leakage vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-15685, CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | 286384cab756e2967e146adf2bf096db
Red Hat Security Advisory 2021-0298-01
Posted Jan 29, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0298-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.7.0. Issues addressed include an information leakage vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-15685, CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | fa853bb8cb813ea7fdd700c5a9aba5cb
Red Hat Security Advisory 2021-0297-01
Posted Jan 29, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0297-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.7.0. Issues addressed include an information leakage vulnerability.

tags | advisory
systems | linux, redhat
advisories | CVE-2020-15685, CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | 868682441c0b4bca4a31832080f0f1b9
Red Hat Security Advisory 2021-0290-01
Posted Jan 28, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0290-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 78.7.0 ESR. Issues addressed include an information leakage vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | 23de7908f0a14058e0e2953b7c17c73b
Red Hat Security Advisory 2021-0289-01
Posted Jan 28, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0289-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 78.7.0 ESR. Issues addressed include an information leakage vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | 680f285e060eaac272c2dd60cadaec74
Red Hat Security Advisory 2021-0288-01
Posted Jan 28, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0288-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 78.7.0 ESR. Issues addressed include an information leakage vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | 2ab343e1850374f3ce10ab0fe7db2ceb
Red Hat Security Advisory 2021-0285-01
Posted Jan 28, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0285-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 78.7.0 ESR. Issues addressed include an information leakage vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-26976, CVE-2021-23953, CVE-2021-23954, CVE-2021-23960, CVE-2021-23964
MD5 | abcf489fc3c560d33113f4730af1bb40
Ubuntu Security Notice USN-4671-1
Posted Dec 16, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4671-1 - Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass the CSS sanitizer, bypass security restrictions, spoof the URL bar, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, spoof
systems | linux, ubuntu
advisories | CVE-2020-16042, CVE-2020-26971, CVE-2020-26972, CVE-2020-26974, CVE-2020-26976, CVE-2020-26978, CVE-2020-35111, CVE-2020-35113, CVE-2020-35114
MD5 | f011e19269912c246f796e240397e2e9
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