CVE-2016-6253 Path traversal in n/a
Local attackers can modify arbitrary files or escalate privileges via symlink attacks in NetBSD's mail.local utility.
- 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-2016-6253?
CVE-2016-6253 is a high-severity path traversal vulnerability in Netbsd Netbsd, published on 20 Jan 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
mail.local in NetBSD versions 6.0 through 6.0.6, 6.1 through 6.1.5, and 7.0 allows local users to change ownership of or append data to arbitrary files on the target system via a symlink attack on the user mailbox.
Weakness: CWE-59
Which versions are affected by CVE-2016-6253?
It affects 1 product.
Products include Netbsd Netbsd.
How do I fix CVE-2016-6253?
No fix has been published for CVE-2016-6253 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-2016-6253 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-6253 exists.
Public exploit code: 1 Metasploit module and 2 Exploit-DB entries.
Other vulnerabilities in Netbsd Netbsd
Sources
Also known as GHSA-8rmq-jwcc-5rg4.