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CVE-2021-29508— Insecure deserialization in Wire

Quick assessment

Affected
AsynkronIT Wire
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。攻击者可以将恶意有效负载传递给反序列化器，从而在反序列化端创建任何类型。

CVSS 9.1 · Critical EPSS 1.58% · P75
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I. Basic Information for CVE-2021-29508

Vulnerability Information
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Vulnerability Title
Insecure deserialization in Wire
Source: CVE Program / CVE List V5
Vulnerability Description
Due to how Wire handles type information in its serialization format, malicious payloads can be passed to a deserializer. e.g. using a surrogate on the sender end, an attacker can pass information about a different type for the receiving end. And by doing so allowing the serializer to create any type on the deserializing end. This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300?view=vs-2019. This also applies to the fork of Wire.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Wire 代码问题漏洞
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。攻击者可以将恶意有效负载传递给反序列化器，从而在反序列化端创建任何类型。
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
AsynkronIT Wire <= 1.0.0 -

II. Public POCs for CVE-2021-29508

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III. Intelligence Information for CVE-2021-29508

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Vendor Advisories for CVE-2021-29508 (1)

Other References for CVE-2021-29508 (1)

IV. Related Vulnerabilities

Same product: Wire
Same weakness: CWE-502

V. Comments for CVE-2021-29508

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