MessagePack-CSharp: Unity unsafe blit formatter allocates from unbounded byte length
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| MessagePack-CSharp | MessagePack-CSharp | affected |
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Configuration 1 [-]
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No data.
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| Messagepack | Messagepack-csharp |
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| Source | ID | Title |
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Github GHSA |
GHSA-w567-gjr2-hm5j | MessagePack-CSharp: Unity unsafe blit formatter allocates from unbounded byte length |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.405% probability within 30 days)
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Messagepack
Messagepack messagepack-csharp |
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| Vendors & Products |
Messagepack
Messagepack messagepack-csharp |
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ssvc
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| Description | MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, UnsafeBlitFormatterBase<T>.Deserialize reads an attacker-controlled byteLength from an extension payload and allocates an array based on that value before validating it against the extension header length or remaining payload bytes. The outer extension header is bounded by available input, but that bound is not used to constrain the inner byteLength before allocation. A very small payload can therefore request a very large T[] allocation. This vulnerability is fixed in 2.5.301 and 3.1.7. | |
| Title | MessagePack-CSharp: Unity unsafe blit formatter allocates from unbounded byte length | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV4_0
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