Vulnerability · Published Nov 7, 2021 · Assigned by mitre
CVE-2021-43412
High 7.8
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.4%top 70.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 products (as reported)
References
- https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html x_refsource_MISC
- https://www.mail-archive.com/bug-hurd%40gnu.org/msg32116.html x_refsource_MISC