CVE-2021-43411
HIGH
7.5
CVSS Score
Published: November 7, 2021 at 05:06 PM UTC
Updated: June 17, 2026 at 04:10 AM UTC
1 product affected across 1 vendorHurd
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Severity
HIGH7.5
Exploit prediction
EPSS 1%
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCExploitMailing ListVendor Advisory
Source: [email protected]
https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.htmlx_refsource_MISCMailing ListPatchThird Party Advisory
Source: [email protected]
https://salsa.debian.org/hurd-team/hurd/-/blob/4d1b079411e2f40576e7b58f9b5b78f733a2beda/debian/patches/0034-proc-Use-UIDs-for-evaluating-permissions.patchx_refsource_MISC
Source: [email protected]
https://www.mail-archive.com/bug-hurd%40gnu.org/msg32112.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-362
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