High severity · published Nov 7, 2021
CVE-2021-43412
An issue was discovered in GNU Hurd before 0.9 20210404-9
7.8
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HU
Hurd · Gnu
before 0.9.20210404-9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43412
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43412
Exploit
https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html
www.mail-archive.com
https://www.mail-archive.com/bug-hurd%40gnu.org/msg32116.html
More from Hurd
8.8
CVE-2021-43413
An issue was discovered in GNU Hurd before 0.9 20210404-9
7.5
CVE-2021-43411
An issue was discovered in GNU Hurd before 0.9 20210404-9
7.0
CVE-2021-43414
An issue was discovered in GNU Hurd before 0.9 20210404-9