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GHSA-rm4w-6696-r77p

nb-connect invalidly assumes the memory layout of std::net::SocketAddr

Source: GitHub Advisory Database (reviewed) Critical CVE-2021-27376

Packages

EcosystemPackageAffectedFixed in
crates.io nb-connect < 1.0.3 1.0.3

Details

As written in the advisory (Markdown source, shown as plain text).

The nb-connect 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 addresses 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.

References

External links from the advisory. They lead to third-party sites.