MessagePack-CSharp: LZ4 decompression allocates from unbounded declared output lengths
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-v72x-2h86-7f8m | MessagePack-CSharp: LZ4 decompression allocates from unbounded declared output lengths |
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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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, when MessagePack-CSharp decompresses Lz4Block or Lz4BlockArray payloads, it reads declared uncompressed lengths from the wire and allocates output buffers based on those lengths before validating that the compressed data is valid or that the declared expansion is reasonable. A small payload can claim a very large uncompressed length and force a large allocation before LZ4 decoding begins. This vulnerability is fixed in 2.5.301 and 3.1.7. | |
| Title | MessagePack-CSharp: LZ4 decompression allocates from unbounded declared output lengths | |
| Weaknesses | CWE-409 CWE-770 |
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| Metrics |
cvssV4_0
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