CVSS: 8.1EPSS: 1%CPEs: 4EXPL: 1CVE-2021-29986 – Mozilla: Race condition when resolving DNS names could have led to memory corruption
https://notcve.org/view.php?id=CVE-2021-29986
A suspected race condition when calling getaddrinfo led to memory corruption and a potentially exploitable crash. *Note: This issue only affected Linux operating systems. Other operating systems are unaffected.* This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91. Una supuesta condición de carrera cuando se llama a getaddrinfo que conllevaba a una corrupción de la memoria y un bloqueo potencialmente explotable. *Nota: Este problema sólo afectaba a los sistemas operativos Linux. • https://bugzilla.mozilla.org/show_bug.cgi?id=1696138 https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.mozilla.org/security/advisories/mfsa2021-33 https://www.mozilla.org/security/advisories/mfsa2021-34 https://www.mozilla.org/security/advisories/mfsa2021-35 https://www.mozilla.org/security/advisories/mfsa2021-36 https://access.redhat.com/security/cve/CVE-2021-29986 https://bugzilla.redhat.com/show_bug.cgi?id=1992417 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •
CVSS: 8.8EPSS: 1%CPEs: 3EXPL: 1CVE-2021-29980 – Mozilla: Uninitialized memory in a canvas object could have led to memory corruption
https://notcve.org/view.php?id=CVE-2021-29980
Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91. Una memoria no inicializada en un objeto canvas podría haber causado una función free() incorrecta, conllevando a una corrupción de la memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.13, Thunderbird versiones anteriores a 91, Firefox ESR versiones anteriores a 78.13 y Firefox versiones anteriores a 91. • https://bugzilla.mozilla.org/show_bug.cgi?id=1722204 https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.mozilla.org/security/advisories/mfsa2021-33 https://www.mozilla.org/security/advisories/mfsa2021-34 https://www.mozilla.org/security/advisories/mfsa2021-35 https://www.mozilla.org/security/advisories/mfsa2021-36 https://access.redhat.com/security/cve/CVE-2021-29980 https://bugzilla.redhat.com/show_bug.cgi?id=1992421 • CWE-908: Use of Uninitialized Resource CWE-909: Missing Initialization of Resource •
CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 0CVE-2021-29989 – Mozilla: Memory safety bugs fixed in Thunderbird 78.13
https://notcve.org/view.php?id=CVE-2021-29989
Mozilla developers reported memory safety bugs present in Firefox 90 and Firefox ESR 78.12. 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. This vulnerability affects Thunderbird < 78.13, Firefox ESR < 78.13, and Firefox < 91. Los desarrolladores de Mozilla informaron de bugs de seguridad de memoria presentes en Firefox 90 y Firefox ESR 78.12. Algunos de estos bugs mostraron evidencias de corrupción de la memoria y presumimos que con esfuerzo suficiente algunos de ellos podrían haber sido explotados para ejecutar código arbitrario. • https://bugzilla.mozilla.org/buglist.cgi?bug_id=1662676%2C1666184%2C1719178%2C1719998%2C1720568 https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.mozilla.org/security/advisories/mfsa2021-33 https://www.mozilla.org/security/advisories/mfsa2021-34 https://www.mozilla.org/security/advisories/mfsa2021-35 https://access.redhat.com/security/cve/CVE-2021-29989 https://bugzilla.redhat.com/show_bug.cgi?id=1992423 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-787: Out-of-bounds Write •
CVSS: 8.8EPSS: 0%CPEs: 3EXPL: 1CVE-2021-29985 – Mozilla: Use-after-free media channels
https://notcve.org/view.php?id=CVE-2021-29985
A use-after-free vulnerability in media channels could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91. Una vulnerabilidad de uso de la memoria previamente liberada en los canales multimedia podría haber conllevado a una corrupción de la memoria y un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Thunderbird versiones anteriores a 78.13, Thunderbird versiones anteriores a 91, Firefox ESR versiones anteriores a 78.13, y Firefox versiones anteriores a 91. • https://bugzilla.mozilla.org/show_bug.cgi?id=1722083 https://security.gentoo.org/glsa/202202-03 https://security.gentoo.org/glsa/202208-14 https://www.mozilla.org/security/advisories/mfsa2021-33 https://www.mozilla.org/security/advisories/mfsa2021-34 https://www.mozilla.org/security/advisories/mfsa2021-35 https://www.mozilla.org/security/advisories/mfsa2021-36 https://access.redhat.com/security/cve/CVE-2021-29985 https://bugzilla.redhat.com/show_bug.cgi?id=1992422 • CWE-416: Use After Free •
CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 0CVE-2021-29969 – Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed
https://notcve.org/view.php?id=CVE-2021-29969
If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore the injected data. This could have resulted in Thunderbird showing incorrect information, for example the attacker could have tricked Thunderbird to show folders that didn't exist on the IMAP server. This vulnerability affects Thunderbird < 78.12. Si Thunderbird estaba configurado para usar STARTTLS para una conexión IMAP, y un atacante inyectaba las respuestas del servidor IMAP antes de la finalización del handshake STARTTLS, entonces Thunderbird no ignoraba los datos inyectados. Esto podría haber resultado en que Thunderbird mostrara información incorrecta, por ejemplo, el atacante podría haber engañado a Thunderbird para que mostrara carpetas que no existían en el servidor IMAP. • https://bugzilla.mozilla.org/show_bug.cgi?id=1682370 https://security.gentoo.org/glsa/202208-14 https://www.mozilla.org/security/advisories/mfsa2021-30 https://access.redhat.com/security/cve/CVE-2021-29969 https://bugzilla.redhat.com/show_bug.cgi?id=1982015 • CWE-345: Insufficient Verification of Data Authenticity CWE-552: Files or Directories Accessible to External Parties •