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...

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...

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...

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...

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 Firefox 访问控制错误漏洞

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...

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...

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...

Tcpcrypt - Encrypting the Internet

Tcpcrypt is a protocol that attempts to encrypt almost all of your network traffic. Unlike other security mechanisms, Tcpcrypt works out of the box: it requires no configuration, no changes to applications, and your network connections will continue to work even if the remote end does not support...

SMTP STARTTLS Deployments Better than Expected

As more service providers understand and embrace the importance of encrypting online communication, certain technologies are being elevated to the forefront of conversations. Perfect Forward Secrecy and HTTP Strict Transport Security HSTS are two that generally top most lists, but another, SMTP...

Debian Security Advisory DSA 2893-1 (openswan - security update)

Two vulnerabilities were fixed in Openswan, an IKE/IPsec implementation for Linux. CVE-2013-2053 During an audit of Libreswan with which Openswan shares some code, Florian Weimer found a remote buffer overflow in the atodn function. This vulnerability can be triggered when Opportunistic Encryptio...

Openswan: User-assisted execution of arbitrary code

Background Openswan is an implementation of IPsec for Linux. Description A buffer overflow flaw has been discovered in Openswan when using Opportunistic Encryption. Impact A remote attacker could send a specially crafted DNS TXT record, possibly resulting in execution of arbitrary code with the...