Vulnerabilities > CVE-2020-12405 - Use After Free vulnerability in multiple products
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family MacOS X Local Security Checks NASL id MACOS_FIREFOX_77_0.NASL description The version of Firefox installed on the remote macOS or Mac OS X host is prior to 77.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-20 advisory. - NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. (CVE-2020-12399) - When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. (CVE-2020-12405) - Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2020-12406) - Mozilla Developer Nicolas Silva found that when using WebRender, Firefox would under certain conditions leak arbitrary GPU memory to the visible screen. The leaked memory content was visible to the user, but not observable from web content. (CVE-2020-12407) - When browsing a document hosted on an IP address, an attacker could insert certain characters to flip domain and path information in the address bar. (CVE-2020-12408) - Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 76 and Firefox ESR 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2020-12409) - Mozilla developers :Gijs (he/him), Randell Jesup reported memory safety bugs present in Firefox 76. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2020-12411) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-06-02 plugin id 137048 published 2020-06-02 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137048 title Mozilla Firefox < 77.0 NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4702.NASL description Multiple security issues have been found in Thunderbird which could result in the setup of a non-encrypted IMAP connection, denial of service or potentially the execution of arbitrary code. last seen 2020-06-13 modified 2020-06-12 plugin id 137375 published 2020-06-12 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137375 title Debian DSA-4702-1 : thunderbird - security update NASL family Debian Local Security Checks NASL id DEBIAN_DLA-2243.NASL description Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code or a timing attack on cryptographic keys. For Debian 8 last seen 2020-06-11 modified 2020-06-10 plugin id 137284 published 2020-06-10 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137284 title Debian DLA-2243-1 : firefox-esr security update NASL family Scientific Linux Local Security Checks NASL id SL_20200603_FIREFOX_ON_SL6_X.NASL description Security Fix(es) : - Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) - Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) - Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) last seen 2020-06-11 modified 2020-06-05 plugin id 137175 published 2020-06-05 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137175 title Scientific Linux Security Update : firefox on SL6.x i386/x86_64 (20200603) NASL family MacOS X Local Security Checks NASL id MACOS_FIREFOX_68_9_ESR.NASL description The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 68.9. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-21 advisory. - NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. (CVE-2020-12399) - Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 76 and Firefox ESR 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2020-12405) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-06-02 plugin id 137050 published 2020-06-02 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137050 title Mozilla Firefox ESR < 68.9 NASL family Windows NASL id MOZILLA_THUNDERBIRD_68_9_0.NASL description The version of Thunderbird installed on the remote Windows host is prior to 68.9.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-22 advisory. - NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. (CVE-2020-12399) - When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. (CVE-2020-12405) - Mozilla developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2020-12406) - Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2020-12410) - If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection. (CVE-2020-12398) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-10 modified 2020-06-04 plugin id 137087 published 2020-06-04 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137087 title Mozilla Thunderbird < 68.9.0 NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2020-2381.NASL description The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2381 advisory. - Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) - Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) - Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-11 modified 2020-06-05 plugin id 137150 published 2020-06-05 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137150 title CentOS 7 : firefox (CESA-2020:2381) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2020-2381.NASL description From Red Hat Security Advisory 2020:2381 : The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2381 advisory. - Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) - Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) - Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-11 modified 2020-06-08 plugin id 137221 published 2020-06-08 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137221 title Oracle Linux 7 : firefox (ELSA-2020-2381) NASL family Windows NASL id MOZILLA_FIREFOX_77_0.NASL description The version of Firefox installed on the remote Windows host is prior to 77.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-20 advisory. - NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. (CVE-2020-12399) - When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. (CVE-2020-12405) - Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2020-12406) - Mozilla Developer Nicolas Silva found that when using WebRender, Firefox would under certain conditions leak arbitrary GPU memory to the visible screen. The leaked memory content was visible to the user, but not observable from web content. (CVE-2020-12407) - When browsing a document hosted on an IP address, an attacker could insert certain characters to flip domain and path information in the address bar. (CVE-2020-12408) - Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 76 and Firefox ESR 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2020-12409) - Mozilla developers :Gijs (he/him), Randell Jesup reported memory safety bugs present in Firefox 76. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2020-12411) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-06-02 plugin id 137049 published 2020-06-02 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137049 title Mozilla Firefox < 77.0 NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2020-2379.NASL description The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2379 advisory. - Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) - Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) - Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-06-03 plugin id 137069 published 2020-06-03 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137069 title RHEL 8 : firefox (RHSA-2020:2379) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2020-2381.NASL description The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2381 advisory. - Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) - Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) - Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-06-03 plugin id 137083 published 2020-06-03 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137083 title RHEL 7 : firefox (RHSA-2020:2381) NASL family Windows NASL id MOZILLA_FIREFOX_68_9_ESR.NASL description The version of Firefox ESR installed on the remote Windows host is prior to 68.9. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-21 advisory. - NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. (CVE-2020-12399) - Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 76 and Firefox ESR 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2020-12405) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-06-02 plugin id 137051 published 2020-06-02 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137051 title Mozilla Firefox ESR < 68.9 NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2020-2380.NASL description The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2380 advisory. - Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) - Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) - Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-06 modified 2020-06-03 plugin id 137066 published 2020-06-03 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137066 title RHEL 8 : firefox (RHSA-2020:2380) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-4383-1.NASL description Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, spoof the addressbar, or execute arbitrary code. (CVE-2020-12405, CVE-2020-12406, CVE-2020-12407, CVE-2020-12408, CVE-2020-12409, CVE-2020-12410, CVE-2020-12411) It was discovered that NSS showed timing differences when performing DSA signatures. An attacker could potentially exploit this to obtain private keys using a timing attack. (CVE-2020-12399). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-11 modified 2020-06-05 plugin id 137179 published 2020-06-05 reporter Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137179 title Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : firefox vulnerabilities (USN-4383-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2020-789.NASL description This update for MozillaFirefox fixes the following issues : - MozillaFirefox was updated to version 68.9.0 Extended Support Release (bsc#1172402). - CVE-2020-12405: Fixed a use-after-free in SharedWorkerService. - CVE-2020-12406: Fixed a JavaScript Type confusion with NativeTypes. - CVE-2020-12410: Fixed multiple memory safety bugs.	 This update was imported from the SUSE:SLE-15:Update update project. last seen 2020-06-12 modified 2020-06-11 plugin id 137349 published 2020-06-11 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137349 title openSUSE Security Update : MozillaFirefox (openSUSE-2020-789) NASL family MacOS X Local Security Checks NASL id MACOS_THUNDERBIRD_68_9_0.NASL description The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 68.9.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-22 advisory. - NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. (CVE-2020-12399) - When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash. (CVE-2020-12405) - Mozilla developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. (CVE-2020-12406) - Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2020-12410) - If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection. (CVE-2020-12398) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-10 modified 2020-06-04 plugin id 137086 published 2020-06-04 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137086 title Mozilla Thunderbird < 68.9.0 NASL family Slackware Local Security Checks NASL id SLACKWARE_SSA_2020-156-01.NASL description New mozilla-thunderbird packages are available for Slackware 14.2 and -current to fix security issues. last seen 2020-06-06 modified 2020-06-05 plugin id 137177 published 2020-06-05 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137177 title Slackware 14.2 / current : mozilla-thunderbird (SSA:2020-156-01) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4695.NASL description Multiple security issues have been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code or a timing attack on cryptographic keys. last seen 2020-06-11 modified 2020-06-05 plugin id 137155 published 2020-06-05 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137155 title Debian DSA-4695-1 : firefox-esr - security update NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2020-2379.NASL description From Red Hat Security Advisory 2020:2379 : The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2379 advisory. - Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) - Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) - Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) Note that Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-11 modified 2020-06-08 plugin id 137220 published 2020-06-08 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137220 title Oracle Linux 8 : firefox (ELSA-2020-2379) NASL family Scientific Linux Local Security Checks NASL id SL_20200603_FIREFOX_ON_SL7_X.NASL description Security Fix(es) : - Mozilla: Use-after-free in SharedWorkerService (CVE-2020-12405) - Mozilla: JavaScript Type confusion with NativeTypes (CVE-2020-12406) - Mozilla: Memory safety bugs fixed in Firefox 77 and Firefox ESR 68.9 (CVE-2020-12410) last seen 2020-06-11 modified 2020-06-05 plugin id 137176 published 2020-06-05 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/137176 title Scientific Linux Security Update : firefox on SL7.x x86_64 (20200603)
Redhat
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References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631618
- https://usn.ubuntu.com/4421-1/
- https://www.mozilla.org/security/advisories/mfsa2020-20/
- https://www.mozilla.org/security/advisories/mfsa2020-21/
- https://www.mozilla.org/security/advisories/mfsa2020-22/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631618
- https://www.mozilla.org/security/advisories/mfsa2020-22/
- https://www.mozilla.org/security/advisories/mfsa2020-21/
- https://www.mozilla.org/security/advisories/mfsa2020-20/
- https://usn.ubuntu.com/4421-1/