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CVE-2022-21658 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  6.3 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
Base Score:  7.3 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://blog.rust-lang.org/2022/01/20/cve-2022-21658.html Exploit  Mitigation  Vendor Advisory 
https://github.com/rust-lang/rust/pull/93110 Patch  Third Party Advisory 
https://github.com/rust-lang/rust/pull/93110/commits/32ed6e599bb4722efefd78bbc9cd7ec4613cb946 Patch  Third Party Advisory 
https://github.com/rust-lang/rust/pull/93110/commits/406cc071d6cfdfdb678bf3d83d766851de95abaf Patch  Third Party Advisory 
https://github.com/rust-lang/rust/pull/93110/commits/4f0ad1c92ca08da6e8dc17838070975762f59714 Patch  Third Party Advisory 
https://github.com/rust-lang/rust/security/advisories/GHSA-r9cc-f5pr-p3j2 Exploit  Mitigation  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7JKZDTBMGAWIFJSNWKBMPO5EAKRR4BEW/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BK32QZLHDC2OVLPKTUHNT2G3VHWHD4LX/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C63NH72Q7UHJM5V3IVYRI7LVBGGFQMSQ/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CKGTACKMKAPRDPWPTU26GYWBELIRFF5N/ Mailing List  Third Party Advisory 
https://support.apple.com/kb/HT213182
https://support.apple.com/kb/HT213183
https://support.apple.com/kb/HT213186
https://support.apple.com/kb/HT213193

Weakness Enumeration

CWE-ID CWE Name Source
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition cwe source acceptance level NIST   Provider acceptance level GitHub, Inc.  
CWE-363 Race Condition Enabling Link Following Provider acceptance level GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-21658
NVD Published Date:
01/20/2022
NVD Last Modified:
05/25/2022
Source:
GitHub, Inc.