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

Quick assessment

Affected
wireapp wire-ios
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wire是个人开发者的一款聊天软件。该软件支持 Web、WindowsiOS、Android、OS X 平台，有群组功能，可以语音通话，发送照片以及其独创性的打招呼方式 PING。 Wire 存在授权问题漏洞，如果攻击者获得旧的但有效的访问令牌，他们可以通过更改电子邮件来接管帐户。

CVSS 7.4 · High EPSS 1.49% · P73
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I. Basic Information for CVE-2021-41093

Vulnerability Information
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Vulnerability Title
Account takeover when having only access to a user's short lived token
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Wire 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wire是个人开发者的一款聊天软件。该软件支持 Web、WindowsiOS、Android、OS X 平台，有群组功能，可以语音通话，发送照片以及其独创性的打招呼方式 PING。 Wire 存在授权问题漏洞，如果攻击者获得旧的但有效的访问令牌，他们可以通过更改电子邮件来接管帐户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wireapp wire-ios < 3.86 -

II. Public POCs for CVE-2021-41093

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III. Intelligence Information for CVE-2021-41093

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Patches & Fixes for CVE-2021-41093 (1)

Vendor Advisories for CVE-2021-41093 (4)

Same Patch Batch · wireapp · 2021-10-04 · 3 CVEs total

CVE-2021-41100 7.4 HIGH Account takeover when having only access to a user's short lived token in wire-server
CVE-2021-41094 4.2 MEDIUM Mandatory encryption at rest can be bypassed (UI) in Wire app

IV. Related Vulnerabilities

Same product: wire-ios
Same vendor: wireapp
Same weakness: CWE-285

V. Comments for CVE-2021-41093

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