CVE-2021-31155: Permissions bypass in pleaser

August 25, 2021 (updated April 3, 2023)

Failure to normalize the umask in pleaser before 0.4.0 allows a local attacker to gain full root privileges if they are allowed to execute at least one command.

References

crates.io/crates/pleaser
github.com/advisories/GHSA-vc5p-j8vw-mc6x
gitlab.com/edneville/please
gitlab.com/edneville/please/-/tree/master/src/bin
nvd.nist.gov/vuln/detail/CVE-2021-31155
rustsec.org/advisories/RUSTSEC-2021-0101.html
www.openwall.com/lists/oss-security/2021/05/18/1

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