Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Affected versions of this package are vulnerable to Out-of-bounds Write. In compiled versions of U-Boot that define CONFIG_IP_DEFRAG, a value of ip->ip_len
(IP packet header’s total Length) higher than IP_HDR_SIZE
and strictly lower than IP_HDR_SIZE+8
leads to a value for len comprised between 0 and 7. This ultimately results in a truncated division by 8 resulting in a value of 0, forcing the hole metadata and fragment to point to the same location. The subsequent memcpy
then overwrites the hole metadata with the fragment data. Through a second fragment, this attacker-controlled metadata can be exploited to perform a controlled write to an arbitrary offset.