Use After Free in Gnu Hurd
CVE-2021-43412
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.
Vulnerability class: Use-After-Free
EPSS: 0.003 (27.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Gnu Hurd
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Exploit, Mailing List, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-43412?
- CVE-2021-43412 is a high-severity vulnerability in Gnu Hurd, classified under Use After Free. CVSS score: 7.8/10. Published 2021-11-07.
- How severe is CVE-2021-43412?
- High severity. CVSS v3 base score is 7.8 out of 10.