CVE-2017-1087 Path traversal in FreeBSD
A jail isolation flaw allows attackers to modify shared memory, potentially causing denial of service or local privilege escalation.
- 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-2017-1087?
CVE-2017-1087 is a high-severity path traversal vulnerability in Freebsd Freebsd, published on 16 Nov 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In FreeBSD 10.x before 10.4-STABLE, 10.4-RELEASE-p3, and 10.3-RELEASE-p24 named paths are globally scoped, meaning a process located in one jail can read and modify the content of POSIX shared memory objects created by a process in another jail or the host system. As a result, a malicious user that has access to a jailed system is able to abuse shared memory by injecting malicious content in the shared memory region. This memory region might be executed by applications trusting the shared memory, like Squid. This issue could lead to a Denial of Service or local privilege escalation.
Weakness: CWE-22
Which versions are affected by CVE-2017-1087?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2017-1087?
No fix has been published for CVE-2017-1087 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2017-1087 being exploited?
There is no known exploitation of CVE-2017-1087 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-cfm3-j9mw-w24h.