CVE-2021-29508

Public Exploit
Insecure deserialization in Wire

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.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.45%
Third-Party Advisory github.com Third-Party Advisory nuget.org
Affected: AsynkronIT Wire
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-29508?
CVE-2021-29508 has been scored as a critical severity vulnerability.
How to fix CVE-2021-29508?
To fix CVE-2021-29508, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-29508 being actively exploited in the wild?
It is possible that CVE-2021-29508 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29508?
CVE-2021-29508 affects AsynkronIT Wire.
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