CVE-2020-6800 – Mozilla: Memory safety bugs fixed in Firefox 73 and Firefox ESR 68.5

https://notcve.org/view.php?id=CVE-2020-6800

14 Feb 2020 — Mozilla developers and community members reported memory safety bugs present in Firefox 72 and Firefox ESR 68.4. 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. In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.... • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1595786%2C1596706%2C1598543%2C1604851%2C1608580%2C1608785%2C1605777 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVE-2020-6797 – Slackware Security Advisory - mozilla-firefox Updates

https://notcve.org/view.php?id=CVE-2020-6797

14 Feb 2020 — By downloading a file with the .fileloc extension, a semi-privileged extension could launch an arbitrary application on the user's computer. The attacker is restricted as they are unable to download non-quarantined files or supply command line arguments to the application, limiting the impact. Note: this issue only occurs on Mac OSX. Other operating systems are unaffected. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5. • https://bugzilla.mozilla.org/show_bug.cgi?id=1596668 • CWE-20: Improper Input Validation •

CVE-2020-6798 – Mozilla: Incorrect parsing of template tag could result in JavaScript injection

https://notcve.org/view.php?id=CVE-2020-6798

14 Feb 2020 — If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox... • https://bugzilla.mozilla.org/show_bug.cgi?id=1602944 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2020-6795 – Mozilla: Crash processing S/MIME messages with multiple signatures

https://notcve.org/view.php?id=CVE-2020-6795

14 Feb 2020 — When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash. This vulnerability affects Thunderbird < 68.5. Cuando se procesa un mensaje que contiene múltiples firmas S/MIME, un bug en el código de procesamiento de MIME causó una desreferencia de puntero null, conllevando a un bloqueo sin explotar. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.5. It was discovered that Message ... • https://bugzilla.mozilla.org/show_bug.cgi?id=1611105 • CWE-476: NULL Pointer Dereference •

CVE-2020-6794 – Mozilla: Setting a master password post-Thunderbird 52 does not delete unencrypted previously stored passwords

https://notcve.org/view.php?id=CVE-2020-6794

14 Feb 2020 — If a user saved passwords before Thunderbird 60 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Thunderbird 60. The new master password is added only on the new file. This could allow the exposure of stored password data outside of user expectations. This vulnerability affects Thunderbird < 68.5. • https://bugzilla.mozilla.org/show_bug.cgi?id=1606619 • CWE-312: Cleartext Storage of Sensitive Information CWE-459: Incomplete Cleanup CWE-522: Insufficiently Protected Credentials •

CVE-2020-6793 – Mozilla: Out-of-bounds read when processing certain email messages

https://notcve.org/view.php?id=CVE-2020-6793

14 Feb 2020 — When processing an email message with an ill-formed envelope, Thunderbird could read data from a random memory location. This vulnerability affects Thunderbird < 68.5. Cuando se procesa un mensaje de correo electrónico con un paquete malformado, Thunderbird podía leer datos desde una ubicación de memoria aleatoria. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.5. Multiple security issues were discovered in Thunderbird. • https://bugzilla.mozilla.org/show_bug.cgi?id=1608539 • CWE-125: Out-of-bounds Read CWE-908: Use of Uninitialized Resource •

CVE-2020-6792 – Mozilla: Message ID calculation was based on uninitialized data

https://notcve.org/view.php?id=CVE-2020-6792

14 Feb 2020 — When deriving an identifier for an email message, uninitialized memory was used in addition to the message contents. This vulnerability affects Thunderbird < 68.5. Cuando se deriva un identificador para un mensaje de correo electrónico, una memoria no inicializada fue usada en adición al contenido del mensaje. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 68.5. It was discovered that Message ID calculation was based on uninitialized data. • https://bugzilla.mozilla.org/show_bug.cgi?id=1609607 • CWE-456: Missing Initialization of a Variable CWE-908: Use of Uninitialized Resource CWE-909: Missing Initialization of Resource •

CVE-2019-17026 – Mozilla Firefox And Thunderbird Type Confusion Vulnerability

https://notcve.org/view.php?id=CVE-2019-17026

09 Jan 2020 — Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1. Una información de alias incorrecta en compilador IonMonkey JIT para establecer los elementos de la matriz podría conllevar a una confusión de tipo. Estamos conscientes de los ataques dirigidos "in the wild" abusando de este fallo. • https://packetstorm.news/files/id/162568 • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') •

CVE-2019-17005 – Mozilla: Buffer overflow in plain text serializer

https://notcve.org/view.php?id=CVE-2019-17005

04 Dec 2019 — The plain text serializer used a fixed-size array for the number of

elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71. El serializador de texto plano utilizó una matriz de tamaño fijo para el número de elementos (ol) que podía procesar; sin embargo, fue posible desbordar la matriz de tamaño estático conllevando a un cor... • http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •

CVE-2019-17011 – Mozilla: Use-after-free when retrieving a document in antitracking

https://notcve.org/view.php?id=CVE-2019-17011

04 Dec 2019 — Under certain conditions, when retrieving a document from a DocShell in the antitracking code, a race condition could cause a use-after-free condition and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71. Bajo determinadas condiciones, al recuperar un documento desde un DocShell en el código antitracking, una condición de carrera podría causar un condición de uso de la memoria previamente liberada y un bloqueo explotable potencialmente. Est... • http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00000.html • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •