Vulnerability Details : CVE-2022-21658
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.
Exploit prediction scoring system (EPSS) score for CVE-2022-21658
Probability of exploitation activity in the next 30 days: 0.07%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 29 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2022-21658
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
---|---|---|---|---|---|
3.3
|
LOW | AV:L/AC:M/Au:N/C:N/I:P/A:P |
3.4
|
4.9
|
[email protected] |
6.3
|
MEDIUM | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H |
1.0
|
5.2
|
[email protected] |
7.3
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H |
2.0
|
4.7
|
[email protected] |
CWE ids for CVE-2022-21658
-
The product checks the status of a file or directory before accessing it, which produces a race condition in which the file can be replaced with a link before the access is performed, causing the product to access the wrong file.Assigned by: [email protected] (Primary)
-
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.Assigned by:
- [email protected] (Secondary)
- [email protected] (Primary)
References for CVE-2022-21658
-
https://support.apple.com/kb/HT213186
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/BK32QZLHDC2OVLPKTUHNT2G3VHWHD4LX/
Mailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/7JKZDTBMGAWIFJSNWKBMPO5EAKRR4BEW/
Mailing List;Third Party Advisory
-
https://support.apple.com/kb/HT213183
Third Party Advisory
-
https://security.gentoo.org/glsa/202210-09
Third Party Advisory
-
https://support.apple.com/kb/HT213193
Third Party Advisory
-
https://github.com/rust-lang/rust/pull/93110/commits/4f0ad1c92ca08da6e8dc17838070975762f59714
Patch;Third Party Advisory
-
https://github.com/rust-lang/rust/pull/93110/commits/406cc071d6cfdfdb678bf3d83d766851de95abaf
Patch;Third Party Advisory
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https://github.com/rust-lang/rust/security/advisories/GHSA-r9cc-f5pr-p3j2
Exploit;Mitigation;Third Party Advisory
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https://github.com/rust-lang/rust/pull/93110
Patch;Third Party Advisory
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https://github.com/rust-lang/rust/pull/93110/commits/32ed6e599bb4722efefd78bbc9cd7ec4613cb946
Patch;Third Party Advisory
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https://blog.rust-lang.org/2022/01/20/cve-2022-21658.html
Exploit;Mitigation;Vendor Advisory
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https://support.apple.com/kb/HT213182
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/CKGTACKMKAPRDPWPTU26GYWBELIRFF5N/
Mailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/C63NH72Q7UHJM5V3IVYRI7LVBGGFQMSQ/
Mailing List;Third Party Advisory
Products affected by CVE-2022-21658
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:a:rust-lang:rust:*:*:*:*:*:*:*:*