virtualjae.blogg.se - Mozilla thunderbird problems

#MOZILLA THUNDERBIRD PROBLEMS INSTALL#
#MOZILLA THUNDERBIRD PROBLEMS UPGRADE#
#MOZILLA THUNDERBIRD PROBLEMS FULL#
#MOZILLA THUNDERBIRD PROBLEMS WINDOWS 10#
#MOZILLA THUNDERBIRD PROBLEMS CODE#

use numbers for quantities and amounts, for example cpu percentage, memory size, numbers of folders and messages (not words like fast/slow, small/large).

fully describe your problem, as a list of steps (actions), in a support forum, existing bug or new bug report and.

We may need "bad files" later for developers to examine.Īfter diagnosing, when you report your problem:

Do not delete files, rename or move files instead.

Note, all steps are essential, so please do not to skip any steps, especially disabling antivirus.

Some steps are temporary *tests*, not a request for you to forever disable a feature.

#MOZILLA THUNDERBIRD PROBLEMS FULL#

Please investigate the full list - which is simple when done one step at a time. To fix slowness, you investigate to eliminate impacts that may be coming from your environment, because Thunderbird can be affected by CPU, memory and disk activity from many sources. However, due to add-on incompatibility issues between the two major releases, many users have opted to stay on 78.x, which from a security perspective, is getting increasingly risky.Slowness in Thunderbird can be frustrating.

#MOZILLA THUNDERBIRD PROBLEMS UPGRADE#

The latest stats from Mozilla show that only 65% of Thunderbird users have upgraded to 91.x, with the rest still using older, unsupported, and now vulnerable versions.Ī month ago, Mozilla forced an upgrade from 78.x to 91.x, to ensure that everyone is running the latest stable version of the email client. Ubuntu has also released a security notice for Thunderbird for the flaws that concern the Linux distribution, and an updated package has been made available on the stable repository.

#MOZILLA THUNDERBIRD PROBLEMS INSTALL#

From there, you will be offered the option to download and install the latest available version. To upgrade to the latest version immediately, open Thunderbird, click on the app menu, and select Help > About Thunderbird. This could have caused sensitive data to be recorded to a user's Microsoft account."ĭue to the severity of the above flaws, upgrading the popular email client to version 91.3 or later should be done as soon as possible. "Applications that wish to prevent copied data from being recorded in Cloud History must use specific clipboard formats and Firefox before versions 94 and ESR 91.3 did not implement them.

#MOZILLA THUNDERBIRD PROBLEMS WINDOWS 10#

"Microsoft introduced a new feature in Windows 10 known as Cloud Clipboard which, if enabled, will record data copied to the clipboard to the cloud, and make it available on other computers in certain scenarios," explained Mozilla. However, Thunderbird and Mozilla did not use those formats, potentially allowing sensitive data to be synchronized. To prevent sensitive data from being synced to the cloud, Microsoft introduced specific clipboard formats that Windows would not copy to the cloud. The Windows 10 Cloud Clipboard feature was introduced in 2018, and if enabled, will sync data you copy to the clipboard into the cloud, so it is available on other devices you have an account. One vulnerability tracked as CVE-2021-38505 is of particular interest as its related to the Windows 10 Cloud Clipboard.

#MOZILLA THUNDERBIRD PROBLEMS CODE#

MOZ-2021-0007: Memory corruption flaws that may lead to arbitrary code execution.

MOZ-2021-0008: Use-after-free in HTTP2 Session object, leading to memory corruption and possibly to an exploitable crash.

inetloc files, allowing code execution on macOS.

CVE-2021-38510: Bypass ‘Download Protections’ on.

CVE-2021-38509: Spoof the JavaScript alert () dialog with arbitrary contents.

CVE-2021-38508: Ability to overlay the Permission Prompt to trick the user into granting any permission.

CVE-2021-38507: Bypass the ‘Same-Origin-Policy’ by exploiting the Opportunistic Encryption feature.

CVE-2021-38506: Forcing Thunderbird to go into fullscreen mode without user interaction, laying the ground for UI spoofing and phishing attacks.CVE-2021-38505: Windows 10 Cloud Clipboard sensitive data recording, copying sensitive user data to the user’s Microsoft account, increasing the risk of information disclosure.

CVE-2021-38504: user-after-free in the file picker dialog, leading to memory corruption and a potentially exploitable crash.

CVE-2021-38503: iframe bypass restrictions that allow script execution.

Mozilla Thunderbird 91.3 fixes ten flaws discovered by various researchers that cover a broad spectrum of the email client's functionality. Triggering most of the newly discovered bugs requires a user to open a specially crafted website in a browsing context, so the exploitation is relatively simple. Mozilla released Thunderbird 91.3 to fix several high-impact vulnerabilities that can cause a denial of service, spoof the origin, bypass security policies, and allow arbitrary code execution.