Account takeover when having only access to a user's short lived token
CVE-2021-41093

7.4HIGH

Key Information:

Vendor

Wireapp

Status
Wire-iOS
Vendor
CVE Published:
4 October 2021

What is CVE-2021-41093?

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.

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Deploy the Patch

Affected Version(s)

wire-ios < 3.86

References

https://github.com/wireapp/wire-ios/security/advisories/G...
x_refsource_CONFIRM
https://github.com/wireapp/wire-ios-sync-engine/security/...
x_refsource_MISC
https://github.com/wireapp/wire-ios-transport/security/ad...
x_refsource_MISC

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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