CVE-2019-5603 Integer overflow in FreeBSD
A local attacker can exploit an integer overflow in FreeBSD's mqueuefs to access files and sockets owned by other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-5603?
CVE-2019-5603 is a high-severity vulnerability in Freebsd Freebsd, published on 26 Jul 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In FreeBSD 12.0-STABLE before r350261, 12.0-RELEASE before 12.0-RELEASE-p8, 11.3-STABLE before r350263, 11.3-RELEASE before 11.3-RELEASE-p1, and 11.2-RELEASE before 11.2-RELEASE-p12, system calls operating on file descriptors as part of mqueuefs did not properly release the reference allowing a malicious user to overflow the counter allowing access to files, directories, and sockets opened by processes owned by other users.
Weakness: CWE-404
Which versions are affected by CVE-2019-5603?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2019-5603?
No fix has been published for CVE-2019-5603 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-5603 being exploited?
There is no known exploitation of CVE-2019-5603 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-jp53-6x44-rj2c.