Vulnerability in GNU Hurd
CVE-2021-43413
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (79.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.020 · change: +0.001
Affected products
References
- lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html (Exploit, Mailing List, Vendor Advisory)
- www.mail-archive.com/bug-hurd@gnu.org/msg32113.html
- lists.gnu.org/archive/html/bug-hurd/2002-11/msg00263.html (Mailing List, Vendor Advisory)
- lists.gnu.org/archive/html/bug-hurd/2005-06/msg00191.html (Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-43413?
- CVE-2021-43413 is a high-severity vulnerability in GNU Hurd. CVSS score: 8.8/10. Published 2021-11-07.
- How severe is CVE-2021-43413?
- High severity. CVSS v3 base score is 8.8 out of 10.