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A malicious HTTP sender can use chunk extensions to cause a receiver
reading from a request or response body to read many more bytes from
the network than are in the body. A malicious HTTP client can further
exploit this to cause a server to automatically read a large amount
of data (up to about 1GiB) when a handler fails to read the entire
body of a request. Chunk extensions are a little-used HTTP feature
which permit including additional metadata in a request or response
body sent using the chunked encoding. The net/http chunked encoding
reader discards this metadata. A sender can exploit this by inserting
a large metadata segment with each byte transferred. The chunk reader
now produces an error if the ratio of real body to encoded bytes grows
too small.
References:
https://nvd.nist.gov/vuln/detail/CVE-2023-39326
https://security-tracker.debian.org/tracker/CVE-2023-39326
(From OE-Core rev: 5b55648f3142762c9563289c1b19aa3b7de27164)
Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
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