CVE-2021-41093 Information

Description

Wire is an open source secure messenger. In affected versions if the an attacker gets an old but valid access token they can take over an account by changing the email. This issue has been resolved in version 3.86 which uses a new endpoint which additionally requires an authentication cookie. See wire-ios-sync-engine and wire-ios-transport references. This is the root advisory that pulls the changes together.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://github.com/wireapp/wire-ios-sync-engine/security/advisories/GHSA-w727-5f74-49xj https://github.com/wireapp/wire-ios/commit/b0e7bb3b13dd8212032cb46e32edf701694687c7 https://github.com/wireapp/wire-server/security/advisories/GHSA-9rm2-w6pq-333m https://github.com/wireapp/wire-ios-transport/security/advisories/GHSA-p354-6r3m-g4xr https://github.com/wireapp/wire-ios/security/advisories/GHSA-6f4c-phfj-m255

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8