CVE-2019-11396 Privilege escalation in n/a
Unprivileged users can escalate to SYSTEM privileges by exploiting insecure file permissions and symlink attacks in the Avira SoftwareUpdater component.
- 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-2019-11396?
CVE-2019-11396 is a high-severity vulnerability in n/a, published on 29 Aug 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in Avira Free Security Suite 10. The permissive access rights on the SoftwareUpdater folder (files / folders and configuration) are incompatible with the privileged file manipulation performed by the product. Files can be created that can be used by an unprivileged user to obtain SYSTEM privileges. Arbitrary file creation can be achieved by abusing the SwuConfig.json file creation: an unprivileged user can replace these files by pseudo-symbolic links to arbitrary files. When an update occurs, a privileged service creates a file and sets its access rights, offering write access to the Everyone group in any directory.
Weakness: CWE-59
Which versions are affected by CVE-2019-11396?
It affects 2 products.
Products include Avira Free Security Suite, Avira Software Updater.
How do I fix CVE-2019-11396?
No fix has been published for CVE-2019-11396 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-11396 being exploited?
There is no known exploitation of CVE-2019-11396 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-wg87-3vq4-8632.