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CVE-2022-39250

Status Candidate

Overview

Matrix JavaScript SDK is the Matrix Client-Server software development kit (SDK) for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver could interfere with the verification flow between two users, injecting its own cross-signing user identity in place of one of the users’ identities. This would lead to the other device trusting/verifying the user identity under the control of the homeserver instead of the intended one. The vulnerability is a bug in the matrix-js-sdk, caused by checking and signing user identities and devices in two separate steps, and inadequately fixing the keys to be signed between those steps. Even though the attack is partly made possible due to the design decision of treating cross-signing user identities as Matrix devices on the server side (with their device ID set to the public part of the user identity key), no other examined implementations were vulnerable. Starting with version 19.7.0, the matrix-js-sdk has been modified to double check that the key signed is the one that was verified instead of just referencing the key by ID. An additional check has been made to report an error when one of the device ID matches a cross-signing key. As this attack requires coordination between a malicious homeserver and an attacker, those who trust their homeservers do not need a particular workaround.

Related Files

Ubuntu Security Notice USN-5724-1
Posted Nov 12, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5724-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, bypass Content Security Policy or other security restrictions, or execute arbitrary code. These issues only affect Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2022-3266, CVE-2022-39250, CVE-2022-39251, CVE-2022-40957, CVE-2022-40958, CVE-2022-40959, CVE-2022-40962, CVE-2022-42928, CVE-2022-42929
SHA-256 | c39532f3b5ca0de31e9976b624174ba03455ccde2413c87932045853e2a58b68
Download | Favorite | View
Gentoo Linux Security Advisory 202210-35
Posted Nov 1, 2022
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202210-35 - Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in arbitrary code execution. Versions less than 102.4.0 are affected.

tags | advisory, arbitrary, vulnerability, code execution
systems | linux, gentoo
advisories | CVE-2022-39236, CVE-2022-39249, CVE-2022-39250, CVE-2022-39251, CVE-2022-42927, CVE-2022-42928, CVE-2022-42929, CVE-2022-42932
SHA-256 | cef704b7d2a92ba31e76f035d832531b2e8eb941f3e99d7e941c4a0371a0061e
Download | Favorite | View
Red Hat Security Advisory 2022-7184-01
Posted Oct 26, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-7184-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2022-39236, CVE-2022-39249, CVE-2022-39250, CVE-2022-39251, CVE-2022-42927, CVE-2022-42928, CVE-2022-42929, CVE-2022-42932
SHA-256 | 0d7d603f6c44dfcadbe648ff0a836c5ca0d974ec2fb028018760f82b1df3b205
Download | Favorite | View
Red Hat Security Advisory 2022-7183-01
Posted Oct 26, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-7183-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2022-39236, CVE-2022-39249, CVE-2022-39250, CVE-2022-39251, CVE-2022-42927, CVE-2022-42928, CVE-2022-42929, CVE-2022-42932
SHA-256 | 132f6b64f2c007f21dfec361dd8e7ebb121ba93db2574ff4f6377beee7e8a8fb
Download | Favorite | View
Red Hat Security Advisory 2022-7181-01
Posted Oct 26, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-7181-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2022-39236, CVE-2022-39249, CVE-2022-39250, CVE-2022-39251, CVE-2022-42927, CVE-2022-42928, CVE-2022-42929, CVE-2022-42932
SHA-256 | 8091b075ecc4ac2d2ace15c0b74b6460867eb4e26d301c17d4cff031f61e350f
Download | Favorite | View
Red Hat Security Advisory 2022-7178-01
Posted Oct 26, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-7178-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2022-39236, CVE-2022-39249, CVE-2022-39250, CVE-2022-39251, CVE-2022-42927, CVE-2022-42928, CVE-2022-42929, CVE-2022-42932
SHA-256 | 4c25ac6eed084b01e278c9d673a6142a96a308224db8d546dd1db9b6c8a09ba6
Download | Favorite | View
Red Hat Security Advisory 2022-7190-01
Posted Oct 26, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-7190-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2022-39236, CVE-2022-39249, CVE-2022-39250, CVE-2022-39251, CVE-2022-42927, CVE-2022-42928, CVE-2022-42929, CVE-2022-42932
SHA-256 | ca07c16fc206f48d40f0b763503abc690ad5afcc9c1028d6029d37ce02069a7c
Download | Favorite | View
Red Hat Security Advisory 2022-7182-01
Posted Oct 26, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-7182-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service
systems | linux, redhat
advisories | CVE-2022-39236, CVE-2022-39249, CVE-2022-39250, CVE-2022-39251, CVE-2022-42927, CVE-2022-42928, CVE-2022-42929, CVE-2022-42932
SHA-256 | 83659464d95934324ea7b6643703554f809001af4512ef8fcd098b21f884c2cb
Download | Favorite | View
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