Oracle Linux 7 : firefox (ELSA-2021-4116)

The remote Oracle Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-4116 advisory. 91.3.0-1.0.1 - Remove upstream references Orabug: 30143292 - Update distribution for Oracle Linux Orabug: 30143292 - Add firefox-oracle-default-prefs.j...

Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports

The Mozilla Foundation Security Advisory describes this flaw as: The Opportunistic Encryption feature of HTTP2 RFC 8164 allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on...

firefox security update

An update is available for firefox. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Mozilla Firefox is an open-source web browser, designed for standards...

RLSA-2021:4123 Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.3.0 ESR. Security Fixes: Mozilla: Use-after-free in HTTP2 Session object Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3...

Important: Red Hat Security Advisory: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports

The Mozilla Foundation Security Advisory describes this flaw as: The Opportunistic Encryption feature of HTTP2 RFC 8164 allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on...

UBUNTU-CVE-2021-38507

The Opportunistic Encryption feature of HTTP2 RFC 8164 allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if a second encrypted port on the same IP addre...

Mozilla Thunderbird < 91.3

The version of Thunderbird installed on the remote Windows host is prior to 91.3. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-50 advisory. - The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions...

Mozilla Thunderbird < 91.3

The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 91.3. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-50 advisory. - The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass...

Security Vulnerabilities fixed in Thunderbird 91.3 — Mozilla

Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunderbird versions 91.3.0 and later will not call the vulnerable code when processing S/MIME messages that contain certificates with DER-encoded DSA or RSA-PSS...

Security Vulnerabilities fixed in Firefox 94 — Mozilla

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after-free could have...

PT-2021-4950

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 94 Thunderbird versions prior to 91.3 Firefox ESR versions prior to 91.3 Description The issue is related to the Opportunistic Encryption feature of HTTP2, which allows a connection to be upgraded to TLS while retaini...

Mozilla Firefox Access Control Error Vulnerability

Mozilla Firefox is an open source web browser from the Mozilla Foundation in the U.S. An access control error vulnerability exists in Mozilla Firefox, which stems from the opportunity encryption feature of HTTP2 RFC 8164 that allows connections to be transparently upgraded to TLS while retaining...

Mozilla Firefox < 94.0

The version of Firefox installed on the remote Windows host is prior to 94.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-48 advisory. - The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such...

Remote Code Execution (RCE)

openswan is vulnerable to remote code execution RCE attacks. The vulnerability exists through a buffer overflow issue in the atodn function in Openswan before 2.6.39, when Opportunistic Encryption is enabled and an RSA key is being used, allows remote attackers to cause a denial of service pluto...

Gentoo Security Advisory GLSA 201401-09

Gentoo Linux Local Security Checks GLSA 201401-09 SPDX-FileCopyrightText: 2015 Eero Volotinen 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 ifdescription...

openSUSE Security Update : MozillaFirefox / MozillaThunderbird / mozilla-nspr (openSUSE-2015-290)

Mozilla Firefox and Thunderbird were updated to fix several important vulnerabilities. Mozilla Firefox was updated to 37.0.1. Mozilla Thunderbird was updated to 31.6.0. mozilla-nspr was updated to 4.10.8 as a dependency. The following vulnerabilities were fixed in Mozilla Firefox : - Miscellaneou...

Vulnerability Forces Mozilla to Disable Opportunistic Encryption in Firefox

Less than a week after introducing the new opportunistic encryption feature in Firefox, Mozilla has had to disable it because of a security vulnerability in the browser’s implementation of the HTTP Alternative Services specification. The bug puts a kink in the new feature, which was designed to...

Firefox 37 arrives with Opportunistic Encryption support

Mozilla has rolled out the latest Version 37 of its Firefox browser for Windows desktop, Mac, Linux and Android operating systems. The new release also adds patches for 13 different security advisories along with some new security improvements as well as user-experience features. The biggest...

Mozilla Adds Opportunistic Encryption for HTTP in Firefox 37

Mozilla has released Firefox 37, and along with the promised addition of the OneCRL certificate revocation list, the company has included a feature that enables opportunistic encryption on connections for servers that don’t support HTTPS. The new feature gives users a new defense against some for...