CVE-2021-43412

Published: Nov 7, 2021Modified: Nov 21, 2024

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: NVD

Description

An issue was discovered in GNU Hurd before 0.9 20210404-9. libports accepts fake notification messages from any client on any port, which can lead to port use-after-free. This can be exploited for local privilege escalation to get full root access.

Affected (1)

Products: Gnu: Hurd

Gnu

1 product

Hurd

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Gnu Hurd	Before 0.9.20210404-9

Related CWEs

CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (4)

https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html

Source: cve@mitre.org

ExploitMailing ListVendor Advisory

https://www.mail-archive.com/bug-hurd%40gnu.org/msg32116.html

Source: cve@mitre.org

https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitMailing ListVendor Advisory

https://www.mail-archive.com/bug-hurd%40gnu.org/msg32116.html

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.