CVE-2021-43413

8.8HIGH

Key Information:

Vendor
Gnu
Status
Hurd
Vendor
CVE Published:
7 November 2021

Summary

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.

References

https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00...
x_refsource_MISC
https://www.mail-archive.com/bug-hurd%40gnu.org/msg32113....
x_refsource_MISC
https://lists.gnu.org/archive/html/bug-hurd/2002-11/msg00...
x_refsource_MISC

EPSS Score

1% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.