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CVE-2020-6819

Status Candidate

Overview

Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.

Related Files

Red Hat Security Advisory 2020-1495-01
Posted Apr 17, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1495-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.7.0. Issues addressed include out of bounds write and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-6819, CVE-2020-6820, CVE-2020-6821, CVE-2020-6822, CVE-2020-6825
MD5 | badb804b1ba4dbb1cbb4f9cfbbd4d8b7
Red Hat Security Advisory 2020-1496-01
Posted Apr 17, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1496-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.7.0. Issues addressed include out of bounds write and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-6819, CVE-2020-6820, CVE-2020-6821, CVE-2020-6822, CVE-2020-6825
MD5 | 71676ef5284232170e0295f0907ecc33
Red Hat Security Advisory 2020-1488-01
Posted Apr 16, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1488-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.7.0. Issues addressed include out of bounds write and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-6819, CVE-2020-6820, CVE-2020-6821, CVE-2020-6822, CVE-2020-6825
MD5 | 663d6a16113565563d367a53a7ec16ee
Red Hat Security Advisory 2020-1489-01
Posted Apr 16, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1489-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.7.0. Issues addressed include out of bounds write and use-after-free vulnerabilities.

tags | advisory, vulnerability
systems | linux, redhat
advisories | CVE-2020-6819, CVE-2020-6820, CVE-2020-6821, CVE-2020-6822, CVE-2020-6825
MD5 | c4d789c7db4a838a4dd734ccf1327636
Ubuntu Security Notice USN-4328-1
Posted Apr 13, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4328-1 - It was discovered that Message ID calculation was based on uninitialized data. An attacker could potentially exploit this to obtain sensitive information. Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-20503, CVE-2020-6792, CVE-2020-6794, CVE-2020-6795, CVE-2020-6805, CVE-2020-6806, CVE-2020-6811, CVE-2020-6814, CVE-2020-6819, CVE-2020-6820, CVE-2020-6822
MD5 | a47c86e4900d242c02f53a1b1a38768c
Red Hat Security Advisory 2020-1338-01
Posted Apr 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1338-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.6.1 ESR. Issues addressed include a use-after-free vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-6819, CVE-2020-6820
MD5 | 3a67026c00bbeb4556778dc7b4573651
Red Hat Security Advisory 2020-1339-01
Posted Apr 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1339-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.6.1 ESR. Issues addressed include a use-after-free vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-6819, CVE-2020-6820
MD5 | d54517b902d1150a3f618d8c55f0d56f
Red Hat Security Advisory 2020-1341-01
Posted Apr 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1341-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.6.1 ESR. Issues addressed include a use-after-free vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-6819, CVE-2020-6820
MD5 | 26b76a6c12f8bd3b7853761bc58f33a7
Red Hat Security Advisory 2020-1340-01
Posted Apr 7, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1340-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 68.6.1 ESR. Issues addressed include a use-after-free vulnerability.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2020-6819, CVE-2020-6820
MD5 | cf3dc6597e6a816abd6ce619206bab5f
Ubuntu Security Notice USN-4317-1
Posted Apr 6, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4317-1 - Two use-after-free bugs were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could exploit these to cause a denial of service or execute arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-6819
MD5 | 01a3fccae04d92aa4c6175e8e093b3a3
Gentoo Linux Security Advisory 202004-07
Posted Apr 6, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202004-7 - Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could result in the arbitrary execution of code. Versions less than 74.0.1 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2020-6819, CVE-2020-6820
MD5 | c5e7310d7419476db7415ac39cdc3d25
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