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Firefox, Thunderbird, receive patches for critical security issues
Critical updates have been released for both Firefox and Thunderbird. Apply now if you haven’t already—we explain how. The post Firefox, Thunderbird, receive patches for critical security issues appeared first on Malwarebytes Labs.
Mozilla has published updates for two critical security issues in Firefox and Thunderbird, demonstrated during Pwn2Own Vancouver. The vulnerabilities, discovered in the Firefox JavaScript engine (shared by the Firefox-based Tor browser) relate to Firefox 100.0.2, Firefox for Android 100.3.0, and Firefox ESR 91.9.1. For users of Thunderbird, the vulnerability there is in relation to Thunderbird 91.9.91.
Additionally, there is some fallout beyond the standard versions of Firefox and Thunderbird. Users of the anti-surveillance Tails Operating System have been warned to stop using the bundled Tor browser until a fix goes live. This is because it could be potentially vulnerable to CVE-2022-1802:
This vulnerability allows a malicious website to bypass some of the security built in Tor Browser and access information from other websites.
For example, after you visit a malicious website, an attacker controlling this website might access the password or other sensitive information that you send to other websites afterwards during the same Tails session.
This vulnerability doesn’t break the anonymity and encryption of Tor connections.
The fix for this Tails issue may not be seen until at least version 5.1. At time of writing, the expected release date for this is May 31.
The vulnerabilities
The two issues come with the following description:
CVE-2022-1802 is a critical prototype pollution vulnerability. According to Mozilla, an attacker who was able to corrupt the methods of an Array object in JavaScript via prototype pollution, could have executed malicious JavaScript code in a privileged context.
CVE-2022-1529 is another critical prototype pollution vulnerability. In this case, Mozilla says that untrusted user input was used in object indexing, leading to prototype pollution, which could have allowed an attacker to execute malicious JavaScript code in a privileged context.
Update now, if you haven’t already
Most installations of Thunderbird and Firefox will be set to update by default. If this is the case, you should already have the security fixes applied and you have nothing to worry about.
This isn’t the case for all installations, however. If you don’t have Firefox or Thunderbird set to update automatically, the fix won’t be present. As a result, you’ll need to manually apply the update.
In Firefox, navigate to Settings and then click General > Firefox Updates.
From here, select the most suitable option from Allow Firefox to:
- Automatically install updates
- Check for updates but let you choose to install them.
The update process for Thunderbird is much the same as Firefox. By default, it’s set to update manually, but you can select similar options to Firefox using the Advanced option in the Updates tab.
With both of these tasks accomplished, you should no longer be at risk from either CVE.
Related news
If an attacker was able to corrupt the methods of an Array object in JavaScript via prototype pollution, they could have achieved execution of attacker-controlled JavaScript code in a privileged context. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.
SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with Orion admin-level account access to SolarWinds Web Console to execute arbitrary commands.
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 2022-4772-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.9.1.
Red Hat Security Advisory 2022-4765-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.9.1 ESR.
Red Hat Security Advisory 2022-4770-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.9.1.
Red Hat Security Advisory 2022-4776-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.9.1 ESR.
An update for firefox is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
An update for thunderbird is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
Red Hat Security Advisory 2022-4767-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.9.1 ESR.
Red Hat Security Advisory 2022-4774-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.9.1.
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
The maintainers of the Tails project have issued a warning that the Tor Browser that's bundled with the operating system is unsafe to use for accessing or entering sensitive information. "We recommend that you stop using Tails until the release of 5.1 (May 31) if you use Tor Browser for sensitive information (passwords, private messages, personal information, etc.)," the project said in an
The maintainers of the Tails project have issued a warning that the Tor Browser that's bundled with the operating system is unsafe to use for accessing or entering sensitive information. "We recommend that you stop using Tails until the release of 5.1 (May 31) if you use Tor Browser for sensitive information (passwords, private messages, personal information, etc.)," the project said in an
Red Hat Security Advisory 2022-4729-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.9.1 ESR.
Red Hat Security Advisory 2022-4729-01 - Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.9.1 ESR.
Red Hat Security Advisory 2022-4730-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.9.1.
Red Hat Security Advisory 2022-4730-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 91.9.1.
Critical vulnerability has been fixed upstream, but Tails dev team ‘doesn’t have the capacity to publish an emergency release earlier’
Critical vulnerability has been fixed upstream, but Tails dev team ‘doesn’t have the capacity to publish an emergency release earlier’
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
Ubuntu Security Notice 5435-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass permission prompts, obtain sensitive information, bypass security restrictions, cause user confusion, or execute arbitrary code. It was discovered that Thunderbird would show the wrong security status after viewing an attached message that is signed or encrypted. An attacker could potentially exploit this by tricking the user into trusting the authenticity of a message.
Ubuntu Security Notice 5434-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass permission prompts, obtain sensitive information, bypass security restrictions, cause user confusion, or execute arbitrary code. It was discovered that Thunderbird would show the wrong security status after viewing an attached message that is signed or encrypted. An attacker could potentially exploit this by tricking the user into trusting the authenticity of a message.
Ubuntu Security Notice 5434-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass permission prompts, obtain sensitive information, bypass security restrictions, cause user confusion, or execute arbitrary code. It was discovered that Thunderbird would show the wrong security status after viewing an attached message that is signed or encrypted. An attacker could potentially exploit this by tricking the user into trusting the authenticity of a message.
Ubuntu Security Notice 5435-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass permission prompts, obtain sensitive information, bypass security restrictions, cause user confusion, or execute arbitrary code. It was discovered that Thunderbird would show the wrong security status after viewing an attached message that is signed or encrypted. An attacker could potentially exploit this by tricking the user into trusting the authenticity of a message.
Ubuntu Security Notice 5434-1 - It was discovered that the methods of an Array object could be corrupted as a result of prototype pollution by sending a message to the parent process. If a user were tricked into opening a specially crafted website, an attacker could exploit this to execute JavaScript in a privileged context.
Ubuntu Security Notice 5434-1 - It was discovered that the methods of an Array object could be corrupted as a result of prototype pollution by sending a message to the parent process. If a user were tricked into opening a specially crafted website, an attacker could exploit this to execute JavaScript in a privileged context.
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation
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 Critical. 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-2022-1529: Mozilla: Untrusted input used in JavaScript object indexing, leading to prototype pollution * CVE-2022-1802: Mozilla: Prototype pollution in Top-Level Await implementation