CVE-2021-43413 Privilege escalation in n/a
A shared pager port in GNU Hurd allows local attackers to modify readable files, leading to trivial full root access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-43413?
CVE-2021-43413 is a high-severity vulnerability in n/a, published on 7 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2021-43413?
It affects 1 product.
Products include Gnu Hurd.
How do I fix CVE-2021-43413?
No fix has been published for CVE-2021-43413 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-43413 being exploited?
There is no known exploitation of CVE-2021-43413 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-4gqc-53g7-25x6.