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CVE-2021-43411 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html Exploit  Mailing List  Vendor Advisory 
https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html Exploit  Mailing List  Vendor Advisory 
https://salsa.debian.org/hurd-team/hurd/-/blob/4d1b079411e2f40576e7b58f9b5b78f733a2beda/debian/patches/0034-proc-Use-UIDs-for-evaluating-permissions.patch Mailing List  Patch  Third Party Advisory 
https://salsa.debian.org/hurd-team/hurd/-/blob/4d1b079411e2f40576e7b58f9b5b78f733a2beda/debian/patches/0034-proc-Use-UIDs-for-evaluating-permissions.patch Mailing List  Patch  Third Party Advisory 
https://www.mail-archive.com/bug-hurd%40gnu.org/msg32112.html
https://www.mail-archive.com/bug-hurd%40gnu.org/msg32112.html

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-43411
NVD Published Date:
11/07/2021
NVD Last Modified:
11/21/2024
Source:
MITRE