GNU Hurd vulnerabilities

4 CVEs affecting GNU Hurd, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2021-43414, published 2021-11-07.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2021-43413, published 2021-11-07. High severity, CVSS 8.8. EPSS: 2% chance of exploitation in the next 30 days. 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…
CVE-2021-43411, published 2021-11-07. High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days. An issue was discovered in GNU Hurd before 0.9 20210404-9. When trying to exec a setuid executable, there's a window of time when the process already has the new privileges, but still refers to the…
CVE-2021-43412, published 2021-11-07. High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days. 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…
CVE-2021-43414, published 2021-11-07. High severity, CVSS 7.0. EPSS: 0.3% chance of exploitation in the next 30 days. An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol in the proc server is vulnerable to man-in-the-middle attacks, which can be exploited for local…