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ALSA-2022:7178 — Important: thunderbird security update

Affected: AlmaLinux:9: thunderbird

Mozilla Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 102.4.0.

Security Fix(es):

* Mozilla: Matrix SDK bundled with Thunderbird vulnerable to an impersonation attack by malicious server administrators (CVE-2022-39249) * Mozilla: Matrix SDK bundled with Thunderbird vulnerable to a device verification attack (CVE-2022-39250) * Mozilla: Matrix SDK bundled with Thunderbird vulnerable to an impersonation attack (CVE-2022-39251) * Mozilla: Same-origin policy violation could have leaked cross-origin URLs (CVE-2022-42927) * Mozilla: Memory Corruption in JS Engine (CVE-2022-42928) * Mozilla: Matrix SDK bundled with Thunderbird vulnerable to a data corruption issue (CVE-2022-39236) * Mozilla: Denial of Service via window.print (CVE-2022-42929) * Mozilla: Memory safety bugs fixed in Firefox ESR 102.4 and Thunderbird 102.4 (CVE-2022-42932)

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.

certfr-2022-avi-869 — De multiples vulnérabilités ont été corrigées dans Mozilla Thunderbird. Elles permettent à…

certfr-2022-avi-869

CLEANSTART-2024-VR88487 — Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript

Affected: CleanStart: element-web

Security vulnerability affects the element-web package. Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript.

EUVD-2026-233564

fkie_cve-2022-39251

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without any indication such as a grey shield. Additionally, a sophisticated attacker cooperating with a malicious homeserver could employ this vulnerability to perform a targeted attack in order to send fake to-device messages appearing to originate from another user. This can allow, for example, to inject the key backup secret during a self-verification, to make a targeted device start using a malicious key backup spoofed by the homeserver. These attacks are possible due to a protocol confusion vulnerability that accepts to-device messages encrypted with Megolm instead of Olm. Starting with version 19.7.0, matrix-js-sdk has been modified to only accept Olm-encrypted to-device messages. Out of caution, several other checks have been audited or added. This attack requires coordination between a malicious home server and an attacker, so those who trust their home servers do not need a workaround.

GHSA-r48r-j8fx-mq2c — matrix-js-sdk subject to user spoofing via Olm/Megolm protocol confusion

Affected: npm: matrix-js-sdk

### Impact

An attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without any indication such as a grey shield.

Additionally, a sophisticated attacker cooperating with a malicious homeserver could employ this vulnerability to perform a targeted attack in order to send fake to-device messages appearing to originate from another user. This can allow, for example, to inject the key backup secret during a self-verification, to make a targeted device start using a malicious key backup spoofed by the homeserver.

These attacks are possible due to a protocol confusion vulnerability that accepts to-device messages encrypted with Megolm instead of Olm.

### Patches

matrix-js-sdk has been modified to only accept Olm-encrypted to-device messages.

Out of caution, several other checks have been audited or added: - Cleartext `m.room_key`, `m.forwarded_room_key` and `m.secret.send` to_device messages are discarded. - Secrets received from untrusted devices are discarded. - Key backups are only usable if they have a valid signature from a trusted device (no more local trust, or trust-on-decrypt). - The origin of a to-device message should only be determined by observing the Olm session which managed to decrypt the message, and not by using claimed sender_key, user_id, or any other fields controllable by the homeserver.

### Workarounds

As this attack requires coordination between a malicious home server and…

gsd-2022-39251

openSUSE-SU-2024:12374-1 — element-desktop-1.11.8-1.1 on GA media

element-desktop-1.11.8-1.1 on GA media

RHSA-2022:7181 — Red Hat Security Advisory: thunderbird security update

Mozilla: Matrix SDK bundled with Thunderbird vulnerable to a data corruption issue Mozilla: Matrix SDK bundled with Thunderbird vulnerable to an impersonation attack by malicious server administrators Mozilla: Matrix SDK bundled with Thunderbird vulnerable to a device verification attack Mozilla: Matrix SDK bundled with Thunderbird vulnerable to an impersonation attack Mozilla: Same-origin policy violation could have leaked cross-origin URLs Mozilla: Memory Corruption in JS Engine Mozilla: Denial of Service via window.print Mozilla: Memory safety bugs fixed in Firefox ESR 102.4 and Thunderbird 102.4

UBUNTU-CVE-2022-39251

Affected: Ubuntu:18.04:LTS: thunderbird, Ubuntu:20.04:LTS: thunderbird, Ubuntu:20.04:LTS: node-matrix-js-sdk, Ubuntu:22.04:LTS: node-matrix-js-sdk, Ubuntu:22.04:LTS: thunderbird, Ubuntu:24.04:LTS: node-matrix-js-sdk

WID-SEC-W-2022-1589 — Mozilla Thunderbird: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Thunderbird ausnutzen, um Sicherheitsvorkehrungen zu umgehen und um einen Denial of Service Zustand herbeizuführen.