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CVE-2021-43411

nvd nist
Published: Nov 7, 2021Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.6 / Impact: 5.9
Source: NVD

Description

An issue was discovered in GNU Hurd before 0.9 20210404-9. When trying to exec a setuid executable, there's a window of time when the process already has the new privileges, but still refers to the old task and is accessible through the old process port. This can be exploited to get full root access.

Affected (1)

Products: Gnu: Hurd
Gnu
1 product
Hurd
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Hurd
Before 0.9.20210404-9

Related CWEs

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References (6)

Source: cve@mitre.org
ExploitMailing ListVendor Advisory
Source: cve@mitre.org
Mailing ListPatchThird Party Advisory
Source: cve@mitre.org
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitMailing ListVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.