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GO-2021-0225
No affected components available
Certain invalid inputs to ReadUvarint or ReadVarint could cause those functions to read an unlimited number of bytes from the ByteReader argument before returning an error. This could lead to processing more input than expected when the caller is reading directly from a network and depends on ReadUvarint and ReadVarint only consuming a small, bounded number of bytes, even from invalid inputs.
With the update, ReadUvarint and ReadVarint now always return after consuming a bounded number of bytes (specifically, MaxVarintLen64, which is 10). The result being returned has not changed; the functions merely detect and return some errors without reading as much input.
Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.
No exploitation activity has been observed at this time. Continue routine monitoring.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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