Local Privilege Escalation in GNU Hurd Affected by libports
CVE-2021-43412

7.8HIGH

Key Information:

Vendor

Gnu
Status
Hurd
Vendor
CVE Published:
7 November 2021

What is CVE-2021-43412?

A vulnerability exists in GNU Hurd where libports improperly processes fake notification messages from clients on any port. This flaw can lead to a use-after-free issue, allowing an attacker to escalate local privileges to gain full root access. Such an exploit can significantly compromise the integrity and security of the system, emphasizing the need for timely updates and patches.

References

https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00...
x_refsource_MISC
https://www.mail-archive.com/bug-hurd%40gnu.org/msg32116....
x_refsource_MISC

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-43412 : Local Privilege Escalation in GNU Hurd Affected by libports