CVE-2021-29508 Information

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.

CVSS Vector

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

Reference

https://www.nuget.org/packages/Wire/ https://github.com/AsynkronIT/Wire/security/advisories/GHSA-hpw7-3vq3-mmv6

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.1