Description (CNA)
MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePack-CSharp's multi-dimensional array formatters read dimension lengths directly from the payload and allocate T[,], T[,,], or T[,,,] before validating that the dimension product matches the encoded element count. The formatter reads a guarded element array header, but allocation of the target multi-dimensional array happens before the dimensions are checked against that element count. A small payload can therefore declare large dimensions, provide an empty or tiny inner array, and cause a large heap allocation before element data is validated. This vulnerability is fixed in 2.5.301 and 3.1.7.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| MessagePack-CSharp / MessagePack-CSharp | affected >= 3.0, < 3.1.7; affected < 2.5.301 |
CWE
CWE-770
References
ADP enrichment
No English description supplied.
No references supplied.