Improper Authentication Affecting thunderbird package, versions <1:102.4.2+build2-0ubuntu0.20.04.1


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.13% (49th percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-3170606
  • published29 Sept 2022
  • disclosed28 Sept 2022

Introduced: 28 Sep 2022

CVE-2022-39249  (opens in a new tab)
CWE-287  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Ubuntu:20.04 thunderbird to version 1:102.4.2+build2-0ubuntu0.20.04.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

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 appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-js-sdk implementing a too permissive key forwarding strategy on the receiving end. Starting with version 19.7.0, the default policy for accepting key forwards has been made more strict in the matrix-js-sdk. matrix-js-sdk will now only accept forwarded keys in response to previously issued requests and only from own, verified devices. The SDK now sets a trusted flag on the decrypted message upon decryption, based on whether the key used to decrypt the message was received from a trusted source. Clients need to ensure that messages decrypted with a key with trusted = false are decorated appropriately, for example, by showing a warning for such messages. This attack requires coordination between a malicious homeserver and an attacker, and those who trust your homeservers do not need a workaround.

CVSS Scores

version 3.1