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Merge pull request #503 from faern/net2-socketaddr

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Add advisory on net2 making invalid memory assumptions
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Sergey "Shnatsel" Davidoff
2020-12-03 00:22:22 +01:00
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parent fc6aabb66e 4ddf6680a7
commit 408e4e7e1c
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crates/net2/RUSTSEC-0000-0000.md Normal file
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```toml
[advisory]
id = "RUSTSEC-0000-0000"
package = "net2"
date = "2020-11-07"
url = "https://github.com/deprecrated/net2-rs/issues/105"
keywords = ["memory", "layout", "cast"]
informational = "unsound"
[versions]
patched = [">= 0.2.36"]
```
# `net2` invalidly assumes the memory layout of std::net::SocketAddr
The [`net2`](https://crates.io/crates/net2) crate has assumed `std::net::SocketAddrV4`
and `std::net::SocketAddrV6` have the same memory layout as the system C representation
`sockaddr`. It has simply casted the pointers to convert the socket addresess to the
system representation. The standard library does not say anything about the memory
layout, and this will cause invalid memory access if the standard library
changes the implementation. No warnings or errors will be emitted once the
change happens.