CVE-2012-3447 Arbitrary file overwrite in OpenStack Nova
Authenticated users can overwrite arbitrary files via symlink attacks in OpenStack Compute, potentially leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2012-3447?
CVE-2012-3447 is a medium-severity path traversal vulnerability in n/a, published on 20 Aug 2012. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
virt/disk/api.py in OpenStack Compute (Nova) 2012.1.x before 2012.1.2 and Folsom before Folsom-3 allows remote authenticated users to overwrite arbitrary files via a symlink attack on a file in an image that uses a symlink that is only readable by root. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3361.
Weakness: CWE-264
Which versions are affected by CVE-2012-3447?
3 open source packages ship an affected version, including nova. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
nova PyPI | All versions | None |
nova PyPI | All versions | 12.0.0 |
nova PyPI | All versions | 12.0.0 |
Products include Openstack Folsom, Openstack Nova.
How do I fix CVE-2012-3447?
Upgrade nova to 12.0.0 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2012-3447 being exploited?
There is no known exploitation of CVE-2012-3447 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2013-2161 OpenStack Swift Unchecked user input in XML responses
- CVE-2013-4497 OpenStack Compute Nova Improper Access Control
- CVE-2013-1665 XML External Entity (XXE) in Django
- CVE-2012-5625 OpenStack Nova Information leak in libvirt LVM-backed instances
- CVE-2013-4155 OpenStack Swift allows authenticated users to cause a denial of service
Sources
Also known as DEBIAN-CVE-2012-3447, GHSA-xc4g-7vw8-924h, PYSEC-2012-21.