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CVE-2021-32755— Certificate pinning is not enforced on the web socket connection

Quick assessment

Affected
wireapp wire-ios-transport
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 存在安全漏洞，该漏洞源于Wire - iOS -transport处理Wire的iOS实现的请求认证、网络失败和重试，在iOS应用程序的3.82版本中，为运行iOS 13或更高版本的用户引入了一个新的web套接字实现，这个新的websocket实现没有配置为在可用时强制证书固定。攻击者可利用该漏洞使新websocke

CVSS 5.4 · Medium EPSS 0.31% · P23
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I. Basic Information for CVE-2021-32755

Vulnerability Information
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Vulnerability Title
Certificate pinning is not enforced on the web socket connection
Source: CVE Program / CVE List V5
Vulnerability Description
Wire is a collaboration platform. wire-ios-transport handles authentication of requests, network failures, and retries for the iOS implementation of Wire. In the 3.82 version of the iOS application, a new web socket implementation was introduced for users running iOS 13 or higher. This new websocket implementation is not configured to enforce certificate pinning when available. Certificate pinning for the new websocket is enforced in version 3.84 or above.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Wire 信任管理问题漏洞
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 存在安全漏洞，该漏洞源于Wire - iOS -transport处理Wire的iOS实现的请求认证、网络失败和重试，在iOS应用程序的3.82版本中，为运行iOS 13或更高版本的用户引入了一个新的web套接字实现，这个新的websocket实现没有配置为在可用时强制证书固定。攻击者可利用该漏洞使新websocke
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-transport = 3.8.2 -

II. Public POCs for CVE-2021-32755

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III. Intelligence Information for CVE-2021-32755

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Vendor Advisories for CVE-2021-32755 (1)

IV. Related Vulnerabilities

Same vendor: wireapp
Same weakness: CWE-295

V. Comments for CVE-2021-32755

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