CVE-2017-9079 Path traversal in n/a
Local attackers can read arbitrary files as root via symlink following in authorized_keys, leading to information disclosure and potential 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
- Available
What is CVE-2017-9079?
CVE-2017-9079 is a medium-severity path traversal vulnerability in Debian Debian Linux, published on 19 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Dropbear before 2017.75 might allow local users to read certain files as root, if the file has the authorized_keys file format with a command= option. This occurs because ~/.ssh/authorized_keys is read with root privileges and symlinks are followed.
Weakness: CWE-732
Which versions are affected by CVE-2017-9079?
It affects 2 products.
Products include Debian Debian Linux, Dropbear Ssh Project Dropbear Ssh.
How do I fix CVE-2017-9079?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2017-9079 being exploited?
There is no known exploitation of CVE-2017-9079 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2017-9079, DEBIAN-CVE-2017-9079, DLA-948-1, GHSA-j5rr-cpp9-c4r6, UBUNTU-CVE-2017-9079.