En resumen
- CVE-2023-23626 es una vulnerabilidad ALTO (CVSS 7.5) que afecta a github.com/ipfs/go-bitfield, go-bitfield (protocol).
- Probabilidad de explotación en los próximos 30 días (EPSS): 0.91%, mayor que el 60.0% de las vulnerabilidades.
- Solución: actualizar a 1.1.0 o posterior.
Description
Impact
When feeding untrusted user input into the size parameter of NewBitfield and FromBytes functions, an attacker can trigger panics.
This happen when the size is a not a multiple of 8 or is negative.
There were already a note in the NewBitfield documentation:
Panics if size is not a multiple of 8.
But it incomplete and missing from FromBytes's documentation.
This has been replaced by returning an (Bitfield, error) and returning a non nil error if the size is wrong.
Patches
Workarounds
- Ensure
size%8 == 0 && size >= 0 yourself before calling NewBitfield or FromBytes
References
NVD description
go-bitfield is a simple bitfield package for the go language aiming to be more performant that the standard library. When feeding untrusted user input into the size parameter of `NewBitfield` and `FromBytes` functions, an attacker can trigger `panic`s. This happen when the `size` is a not a multiple of `8` or is negative. There were already a note in the `NewBitfield` documentation, however known users of this package are subject to this issue. Users are advised to upgrade. Users unable to upgrade should ensure that `size` is a multiple of 8 before calling `NewBitfield` or `FromBytes`.
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