| Description: | Rust is a multi-paradigm, general-purpose programming language
designed for performance and safety, especially safe concurrency. The
Rust Security Response WG was notified that the
`std::fs::remove_dir_all` standard library function is vulnerable a
race condition enabling symlink following (CWE-363). An attacker could
use this security issue to trick a privileged program into deleting
files and directories the attacker couldn't otherwise access or
delete. Rust 1.0.0 through Rust 1.58.0 is affected by this
vulnerability with 1.58.1 containing a patch. Note that the following
build targets don't have usable APIs to properly mitigate the attack,
and are thus still vulnerable even with a patched toolchain: macOS
before version 10.10 (Yosemite) and REDOX. We recommend everyone to
update to Rust 1.58.1 as soon as possible, especially people
developing programs expected to run in privileged contexts (including
system daemons and setuid binaries), as those have the highest risk of
being affected by this. Note that adding checks in your codebase
before calling remove_dir_all will not mitigate the vulnerability, as
they would also be vulnerable to race conditions like remove_dir_all
itself. The existing mitigation is working as intended outside of race
conditions.
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