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CVE-2020-12421

Status Candidate

Overview

When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Related Files

Debian Security Advisory 4713-1
Posted Jul 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4713-1 - Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code.

tags | advisory, web, arbitrary
systems | linux, debian
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | d093ddf7ea84bd8b0d919e2d72ccc6b5b548b88a83a9cc2efba50120325911d0
Debian Security Advisory 4718-1
Posted Jul 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4718-1 - Multiple security issues have been found in Thunderbird which could result in denial of service or potentially the execution of arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, debian
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | 75e9b541862fbad7e697f797a3a344aa3ac3d5584368eecb50fa3ab4bb37314f
Gentoo Linux Security Advisory 202007-10
Posted Jul 27, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202007-10 - Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could result in the arbitrary execution of code. Versions less than 68.10.0 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-12402, CVE-2020-12415, CVE-2020-12416, CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421, CVE-2020-12422, CVE-2020-12424, CVE-2020-12425, CVE-2020-12426
SHA-256 | 4ce536bdb972fdf2b3ae93e96480f4ec88105eb035b203f851db2e0a8a5c399b
Gentoo Linux Security Advisory 202007-09
Posted Jul 27, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202007-9 - Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code. Versions less than 68.10.0 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | ea8abc26df0516012ce689c3d8937884c7aaee14054fa8fc2fd5fbcfba5c76d2
Red Hat Security Advisory 2020-3038-01
Posted Jul 21, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3038-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.10.0. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | 5e74f46ee07b1cef9082738f2eee767f165a75f1c8765ba915ccde2188107415
Red Hat Security Advisory 2020-3046-01
Posted Jul 21, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3046-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.10.0. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | d9644b2d8f14cd7cac07a7aa724255ba99094e8271d21f8ba6eed41396e5ffe5
Red Hat Security Advisory 2020-2966-01
Posted Jul 16, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2966-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.10.0. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | 045a28276468f219b7e797aed002833511372fffb4afeef9c6031cb14fd0f6b7
Red Hat Security Advisory 2020-2906-01
Posted Jul 14, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2906-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.10.0. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | ecc8103f2dfcc12785881ad593cefc17fb7a731e11e7a97ea8a8337d158917fe
Red Hat Security Advisory 2020-2907-01
Posted Jul 14, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2907-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.10.0. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | a9e027161869f1986b9b6068aacd456cf1e54e2b2daa71f55c38e118eadb8e92
Ubuntu Security Notice USN-4421-1
Posted Jul 8, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4421-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. It was discovered that Thunderbird would continue an unencrypted connection when configured to use STARTTLS for IMAP if the server responded with PREAUTH. A remote attacker could potentially exploit this to perform a person-in-the-middle attack in order to obtain sensitive information. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, imap
systems | linux, ubuntu
advisories | CVE-2020-12398, CVE-2020-12399, CVE-2020-12406, CVE-2020-12410, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | e29ba156301d1adef5ee70accc941815f87182af2911cd015ba0d303ce8a38ff
Red Hat Security Advisory 2020-2827-01
Posted Jul 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2827-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.10.0 ESR. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, web, vulnerability
systems | linux, redhat
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | 064925aa7989f6da966aef73351a3d8de7c5c079c48f1af5c1efca68460670e7
Red Hat Security Advisory 2020-2828-01
Posted Jul 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2828-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.10.0 ESR. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, web, vulnerability
systems | linux, redhat
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | f92fe6b479e4d1555739a7590461c16cce36dfdef19277a82d1460eb418830c1
Red Hat Security Advisory 2020-2826-01
Posted Jul 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2826-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.10.0 ESR. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, web, vulnerability
systems | linux, redhat
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | d3f478808f47eec5061378a8e0dd94982b5f529f05d34a126c898e347447645c
Red Hat Security Advisory 2020-2824-01
Posted Jul 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2824-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.10.0 ESR. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, web, vulnerability
systems | linux, redhat
advisories | CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | 6c84acd38b40987a084c4304884a54a90d2f683f9b887fbe6a3b1f997b088baa
Red Hat Security Advisory 2020-2825-01
Posted Jul 6, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-2825-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.10.0 ESR. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, web, vulnerability
systems | linux, redhat
advisories | CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421
SHA-256 | 387f9e5699e149616d1ef8a5e43e2834a6bb5e6f6664c74912f4c8d7f805e18e
Ubuntu Security Notice USN-4408-1
Posted Jul 2, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4408-1 - 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, bypass permission prompts, or execute arbitrary code. It was discovered that when performing add-on updates, certificate chains not terminating with built-in roots were silently rejected. This could result in add-ons becoming outdated. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, root
systems | linux, ubuntu
advisories | CVE-2020-12415, CVE-2020-12419, CVE-2020-12420, CVE-2020-12421, CVE-2020-12424, CVE-2020-12425, CVE-2020-12426
SHA-256 | 6ca4741ec78669fe449e3105edcdad19b8a5775cdcccfa95a54e6e0651210cf2
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