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Description
Integer overflow in
hyper
's parsing of theTransfer-Encoding
header leads to data loss
Details | |
---|---|
Package | hyper |
Version | 0.10.16 |
URL | GHSA-5h46-h7hh-c6x9 |
Date | 2021-07-07 |
Patched versions | >=0.14.10 |
When decoding chunk sizes that are too large, hyper
's code would encounter an integer overflow. Depending on the situation,
this could lead to data loss from an incorrect total size, or in rarer cases, a request smuggling attack.
To be vulnerable, you must be using hyper
for any HTTP/1 purpose, including as a client or server, and consumers must send
requests or responses that specify a chunk size greater than 18 exabytes. For a possible request smuggling attack to be possible,
any upstream proxies must accept a chunk size greater than 64 bits.
See advisory page for additional details.
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