Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rust-Lang | Rust | >= 1.0.0, <= 1.58.0 |
| Fedoraproject | Fedora | 34 |
| Apple | Ipados | < 15.4 |
| Apple | Iphone Os | < 15.4 |
| Apple | Macos | >= 12.0.0, < 12.3 |
| Apple | Tvos | < 15.4 |
| Apple | Watchos | < 8.5 |
Related Weaknesses (CWE)
References
- https://blog.rust-lang.org/2022/01/20/cve-2022-21658.htmlExploitMitigationVendor Advisory
- https://github.com/rust-lang/rust/pull/93110PatchThird Party Advisory
- https://github.com/rust-lang/rust/pull/93110/commits/32ed6e599bb4722efefd78bbc9cPatchThird Party Advisory
- https://github.com/rust-lang/rust/pull/93110/commits/406cc071d6cfdfdb678bf3d83d7PatchThird Party Advisory
- https://github.com/rust-lang/rust/pull/93110/commits/4f0ad1c92ca08da6e8dc1783807PatchThird Party Advisory
- https://github.com/rust-lang/rust/security/advisories/GHSA-r9cc-f5pr-p3j2ExploitMitigationThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202210-09Third Party Advisory
- https://support.apple.com/kb/HT213182Third Party Advisory
- https://support.apple.com/kb/HT213183Third Party Advisory
- https://support.apple.com/kb/HT213186Third Party Advisory
- https://support.apple.com/kb/HT213193Third Party Advisory
FAQ
What is CVE-2022-21658?
CVE-2022-21658 is a vulnerability with a CVSS score of 7.3 (HIGH). 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_di...
How severe is CVE-2022-21658?
CVE-2022-21658 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-21658?
Check the references section above for vendor advisories and patch information. Affected products include: Rust-Lang Rust, Fedoraproject Fedora, Apple Ipados, Apple Iphone Os, Apple Macos.