CVE-2021-29508 CRITICAL

CVE-2021-29508: Insecure deserialization in Wire

Vendor Asynkronit
Product Wire
Weakness CWE-502 · Unsafe deserialization
Published May 11, 2021
Last update August 3, 2024

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 11, 2021 CVE published
August 3, 2024 Record updated

Related vulnerabilities

04Related CVE