Headline
Update now! Mozilla fixes security vulnerabilities and introduces a new privacy feature for Firefox
Mozilla has released Firefox updates to the Release Channel that fix several security vulnerabilities and introduce a new privacy feature called Query Parameter Stripping. The post Update now! Mozilla fixes security vulnerabilities and introduces a new privacy feature for Firefox appeared first on Malwarebytes Labs.
Mozilla released version 102.0 of the Firefox browser to Release channel users on June 28, 2022.
The new version fixes 20 security vulnerabilities, five of which are classified as “High”. The new version also comes with a new privacy feature that strips parameters from URLs that track you around the web.
Vulnerabilities
Publicly disclosed computer security flaws are listed in the Common Vulnerabilities and Exposures (CVE) database. Its goal is to make it easier to share data across separate vulnerability capabilities (tools, databases, and services). These are the CVEs we think you should know:
High
CVE-2022-34479: A malicious website that could create a popup could have resized the popup to overlay the address bar with its own content, resulting in potential user confusion or spoofing attacks. This bug only affects Firefox for Linux. It does not apply to other operating systems.
CVE-2022-34470: Use-after-free in nsSHistory. Use after free (UAF) is a vulnerability caused by incorrect use of dynamic memory during a program’s operation. If after freeing a memory location, a program does not clear the pointer to that memory, an attacker can use the error to manipulate the program. Navigations between XML documents may have led to a use-after-free and potentially exploitable crash.
CVE-2022-34468: CSP sandbox header without ‘allow-scripts’ can be bypassed via retargeted javascript: URI. An iframe that was not permitted to run scripts could do so if the user clicked on a javascript: link.
CVE-2022-34484: Memory safety bugs fixed in Firefox 102 and Firefox ESR 91.11. Some of these bugs showed evidence of JavaScript prototype or memory corruption, and with enough effort some of these could have been exploited to run arbitrary code.
Moderate
CVE-2022-34482 and CVE-2022-34483: Two separate issues with the same effect. Drag and drop of malicious image could have led to malicious executable and potential code execution. An attacker who could have convinced a user to drag and drop an image to a filesystem could have manipulated the resulting filename to contain an executable extension.
CVE-2022-34478: The ms-msdt, search, and search-ms protocols deliver content to Microsoft applications, bypassing the browser when a user accepts a prompt. These applications have had known vulnerabilities, exploited in the wild, so in this release Firefox has blocked these protocols from prompting the user to open them.
New privacy feature
Many companies involved in advertising use custom URL query parameters that enable them to track clicks on links. The most well-known example is probably the ?fbclid= parameter that Facebook adds to outbound links.
With the release of Firefox 102, Mozilla has added the new “Query Parameter Stripping” feature that automatically strips some of these query parameters. It does not matter whether you clicked on a link or pasted the URL into the address bar.
To enable Query Parameter Stripping, go into the Firefox Settings, click on Privacy & Security, and then change Enhanced Tracking Protection to Strict.
You will need to click Reload All Tabs to apply the changes. If you find that setting Enhanced Tracking Protection to Strict could causes issues with certain sites, you can use the Manage Exceptions option to add these websites, or use the “Custom” setting to choose which trackers and scripts to block.
Updating
Under normal circumstances, updates will be applied without user intervention. You can check for the version number in the products’ menu under Help > About
Should you not be using the latest version for some reason, e.g. automatic updates are disabled, then this screen will inform you that a new version is available and will start downloading it.
When it’s done, you’ll see a prompt to restart the browser. This will apply the update.
Stay safe, everyone!
Related news
An iframe that was not permitted to run scripts could do so if the user clicked on a <code>javascript:</code> link. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
Gentoo Linux Security Advisory 202208-14 - Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code. Versions less than 91.12.0 are affected.
Gentoo Linux Security Advisory 202208-8 - Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could result in the arbitrary execution of code. Versions less than 91.12.0:esr are affected.
Red Hat Security Advisory 2022-5481-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.11 ESR. Issues addressed include bypass, integer overflow, and use-after-free vulnerabilities.
Red Hat Security Advisory 2022-5475-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.11. Issues addressed include bypass, integer overflow, and use-after-free vulnerabilities.
Red Hat Security Advisory 2022-5479-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.11 ESR. Issues addressed include bypass, integer overflow, and use-after-free vulnerabilities.
Red Hat Security Advisory 2022-5482-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.11. Issues addressed include bypass, integer overflow, and use-after-free vulnerabilities.
Red Hat Security Advisory 2022-5474-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.11 ESR. Issues addressed include bypass, integer overflow, and use-after-free vulnerabilities.
Red Hat Security Advisory 2022-5480-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.11. Issues addressed include bypass, integer overflow, and use-after-free vulnerabilities.
An update for thunderbird is now available for Red Hat Enterprise Linux 9. 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-2226: Mozilla: An email with a mismatching OpenPGP signature date was accepted as valid * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted ja...
An update for firefox is now available for Red Hat Enterprise Linux 9. 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted javascript: URI * CVE-2022-34470: Mozilla: Use-after-free in nsSHistory * CVE-2022-34472: Mozilla: Unavai...
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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted javascript: URI * CVE-2022-34470: Mozilla: Use-after-free in nsSHistory * CVE-2022-34472: Mozilla: Unavai...
An update for thunderbird 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-2226: Mozilla: An email with a mismatching OpenPGP signature date was accepted as valid * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted ja...
An update for thunderbird is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-2226: Mozilla: An email with a mismatching OpenPGP signature date was accepted as valid * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be ...
An update for firefox is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted javascript: URI * CVE-2022-34470: Mozilla: Use-after-free in nsSHistory * CVE-2...
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An update for thunderbird is now available for Red Hat Enterprise Linux 8.4 Extended Update Support. 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-2226: Mozilla: An email with a mismatching OpenPGP signature date was accepted as valid * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be ...
An update for firefox is now available for Red Hat Enterprise Linux 8.4 Extended Update Support. 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted javascript: URI * CVE-2022-34470: Mozilla: Use-after-free in nsSHistory * CVE-2...
An update for thunderbird is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-2226: Mozilla: An email with a mismatching OpenPGP signature date was accepted as valid * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-script...
An update for firefox is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. 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 the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-2200: Mozilla: Undesired attributes could be set as part of prototype pollution * CVE-2022-31744: Mozilla: CSP bypass enabling stylesheet injection * CVE-2022-34468: Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted javascript: URI * CVE-2022-34470: Mozilla: Use-after-free in nsSHisto...