Mozilla Thunderbird, Firefox ESR and Firefox Stack Buffer Overflow Vulnerabilities

Mozilla Firefox and others are products of the Mozilla Foundation in the U.S.A. Mozilla Firefox is an open source web browser.Mozilla Firefox ESR is an extended support version of Firefox web browser.Mozilla Thunderbird is a suite of e-mail client software separate from the Mozilla Application...

Mozilla Releases Security Updates for Firefox and Firefox ESR 

Mozilla has released security updates to address vulnerabilities in Firefox and Firefox ESR. An attacker could exploit some of these vulnerabilities to take control of an affected system. The Cybersecurity and Infrastructure Security Agency CISA encourages users and administrators to review the...

Mozilla Firefox ESR Security Advisories (MFSA2020-16, MFSA2020-18) - Mac OS X

Mozilla Firefox ESR is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:mozilla:firefoxesr";...

DSA-4678-1 firefox-esr - security update

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CVE-2020-12387

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. This vulnerability affects Firefox ESR 68.8, Firefox 76, and Thunderbird 68.8.0...

Mozilla Firefox ESR Security Advisories (MFSA2020-16, MFSA2020-18) - Windows

Mozilla Firefox ESR is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:mozilla:firefoxesr";...

Security Vulnerabilities fixed in Firefox ESR 68.8 — Mozilla

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash. The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape.Note: this issue only affects Firef...

Security fix for the ALT Linux 10 package firefox-esr version 68.8.0-alt1

May 5, 2020 Andrey Cherepanov 68.8.0-alt1 - New ESR version 68.8.0. - Fixes: + CVE-2020-12387 Use-after-free during worker shutdown + CVE-2020-12388 Sandbox escape with improperly guarded Access Tokens + CVE-2020-12389 Sandbox escape with improperly separated process types + CVE-2020-6831 Buffer...

KLA11765 Multiple vulnerabilities in Mozilla Firefox ESR

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to cause denial of service, execute arbitrary code, bypass security restrictions, obtain sensitive information. Below is a complete list of vulnerabilities: 1. Use after free vulnerabilit...

CentOS: Security Advisory for firefox (CESA-2020:1429)

The remote host is missing an update for the Copyright C 2020 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

CVE-2020-6820

Under certain conditions, when handling a ReadableStream, 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...

DEBIAN-CVE-2020-6825

Mozilla developers and community members Tyson Smith and Christian Holler reported memory safety bugs present in Firefox 74 and Firefox ESR 68.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary...

CVE-2020-6825

Mozilla developers and community members Tyson Smith and Christian Holler reported memory safety bugs present in Firefox 74 and Firefox ESR 68.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary...

CVE-2020-6821

When reading from areas partially or fully outside the source resource with WebGL's copyTexSubImage method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird...

CVE-2020-6827

When following a link that opened an intent://-schemed URL, causing a custom tab to be opened, Firefox for Android could be tricked into displaying the incorrect URI. Note: This issue only affects Firefox for Android. Other operating systems are unaffected.. This vulnerability affects Firefox ESR...

DEBIAN-CVE-2020-6820

Under certain conditions, when handling a ReadableStream, 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...

CVE-2020-6828

A malicious Android application could craft an Intent that would have been processed by Firefox for Android and potentially result in a file overwrite in the user's profile directory. One exploitation vector for this would be to supply a user.js file providing arbitrary malicious preference value...

CVE-2020-6822

On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in GMPDecodeData. It is possible that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Thunderbird 68.7.0, Firefox ESR 68.7, and Firefox 75...

Spoofing

When reading from areas partially or fully outside the source resource with WebGL's copyTexSubImage method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird...

Design/Logic Flaw

A malicious Android application could craft an Intent that would have been processed by Firefox for Android and potentially result in a file overwrite in the user's profile directory. One exploitation vector for this would be to supply a user.js file providing arbitrary malicious preference value...