Vulnerability CVE-2021-43413
Published: 2021-11-07

Description:
An issue was discovered in GNU Hurd before 0.9 20210404-9. A single pager port is shared among everyone who mmaps a file, allowing anyone to modify any files that they can read. This can be trivially exploited to get full root access.

Type:

NVD-CWE-noinfo

CVSS2 => (AV:N/AC:L/Au:S/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9/10
10/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
GNU -> HURD 

 References:
https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html
https://lists.gnu.org/archive/html/bug-hurd/2002-11/msg00263.html
https://www.mail-archive.com/bug-hurd@gnu.org/msg32113.html
https://lists.gnu.org/archive/html/bug-hurd/2005-06/msg00191.html
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