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.

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 68.4.1.

Security Fix(es) :

* Mozilla: IonMonkey type confusion with StoreElementHole and FallibleStoreElement (CVE-2019-17026)

* Mozilla: Bypass of @namespace CSS sanitization during pasting (CVE-2019-17016)

* Mozilla: Type Confusion in XPCVariant.cpp (CVE-2019-17017)

* Mozilla: Memory safety bugs fixed in Firefox 72 and Firefox ESR 68.4 (CVE-2019-17024)

* Mozilla: CSS sanitization does not escape HTML tags (CVE-2019-17022)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Security Fix(es) :

  - Mozilla: IonMonkey type confusion with StoreElementHole     and FallibleStoreElement (CVE-2019-17026)

  - Mozilla: Bypass of @namespace CSS sanitization during     pasting (CVE-2019-17016)

  - Mozilla: Type Confusion in XPCVariant.cpp     (CVE-2019-17017)

  - Mozilla: Memory safety bugs fixed in Firefox 72 and     Firefox ESR 68.4 (CVE-2019-17024)

  - Mozilla: CSS sanitization does not escape HTML tags     (CVE-2019-17022)

This update for MozillaThunderbird to version 68.4.1 fixes the following issues :

Security issues fixed :

  - CVE-2019-17026: IonMonkey type confusion with     StoreElementHole and FallibleStoreElement

  - CVE-2019-17016: Bypass of @namespace CSS sanitization     during pasting

  - CVE-2019-17017: Type Confusion in XPCVariant.cpp

  - CVE-2019-17022: CSS sanitization does not escape HTML     tags

  - CVE-2019-17024: multiple Memory safety bugs fixed

Non-security issues fixed :

  - Various improvements when setting up an account for a     Microsoft Exchange server. For example better detection     for Office 365 accounts.

This update was imported from the SUSE:SLE-15:Update update project.

Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, bypass same-origin restrictions, conduct cross-site scripting (XSS) attacks, or execute arbitrary code. (CVE-2019-11757, CVE-2019-11758, CVE-2019-11759, CVE-2019-11760, CVE-2019-11761, CVE-2019-11762, CVE-2019-11763, CVE-2019-11764, CVE-2019-17005, CVE-2019-17008, CVE-2019-17010, CVE-2019-17011, CVE-2019-17012, CVE-2019-17016, CVE-2019-17017, CVE-2019-17022, CVE-2019-17024, CVE-2019-17026, CVE-2019-20503, CVE-2020-6798, CVE-2020-6800, CVE-2020-6805, CVE-2020-6806, CVE-2020-6807, CVE-2020-6812, CVE-2020-6814, CVE-2020-6819, CVE-2020-6820, CVE-2020-6821, CVE-2020-6825)

It was discovered that NSS incorrectly handled certain memory operations. A remote attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2019-11745)

It was discovered that a specially crafted S/MIME message with an inner encryption layer could be displayed as having a valid signature in some circumstances, even if the signer had no access to the encrypted message. An attacker could potentially exploit this to spoof the message author. (CVE-2019-11755)

A heap overflow was discovered in the expat library in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2019-15903)

It was discovered that Message ID calculation was based on uninitialized data. An attacker could potentially exploit this to obtain sensitive information. (CVE-2020-6792)

Mutiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. (CVE-2020-6793, CVE-2020-6795, CVE-2020-6822)

It was discovered that if a user saved passwords before Thunderbird 60 and then later set a master password, an unencrypted copy of these passwords would still be accessible. A local user could exploit this to obtain sensitive information. (CVE-2020-6794)

It was discovered that the Devtools' 'Copy as cURL' feature did not fully escape website-controlled data. If a user were tricked in to using the 'Copy as cURL' feature to copy and paste a command with specially crafted data in to a terminal, an attacker could potentially exploit this to execute arbitrary commands via command injection.
(CVE-2020-6811).

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.

The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2020:0111 advisory.

  - Mozilla: Bypass of @namespace CSS sanitization during pasting (CVE-2019-17016)

  - Mozilla: Type Confusion in XPCVariant.cpp (CVE-2019-17017)

  - Mozilla: CSS sanitization does not escape HTML tags (CVE-2019-17022)

  - Mozilla: Memory safety bugs fixed in Firefox 72 and Firefox ESR 68.4 (CVE-2019-17024)

  - Mozilla: IonMonkey type confusion with StoreElementHole and FallibleStoreElement (CVE-2019-17026)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
133097	CentOS 7 : thunderbird (CESA-2020:0120)	Nessus	CentOS Local Security Checks	1/21/2020	12/5/2022	high
133128	Scientific Linux Security Update : thunderbird on SL6.x i386/x86_64 (20200116)	Nessus	Scientific Linux Local Security Checks	1/21/2020	3/29/2024	high
133199	openSUSE Security Update : MozillaThunderbird (openSUSE-2020-94)	Nessus	SuSE Local Security Checks	1/23/2020	3/29/2024	high
135896	Ubuntu 16.04 LTS : Thunderbird vulnerabilities (USN-4335-1)	Nessus	Ubuntu Local Security Checks	4/22/2020	10/20/2023	critical
145921	CentOS 8 : firefox (CESA-2020:0111)	Nessus	CentOS Local Security Checks	2/1/2021	12/5/2022	high
147407	NewStart CGSL MAIN 4.06 : firefox Multiple Vulnerabilities (NS-SA-2021-0004)	Nessus	NewStart CGSL Local Security Checks	3/10/2021	4/25/2023	critical

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