CVE-2021-33393 Privilege escalation in n/a
An attacker with unprivileged access can replace a backup script to execute arbitrary code as root due to insecure file ownership.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33393?
CVE-2021-33393 is a high-severity vulnerability in n/a, published on 9 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
lfs/backup in IPFire 2.25-core155 does not ensure that /var/ipfire/backup/bin/backup.pl is owned by the root account. It might be owned by an unprivileged account, which could potentially be used to install a Trojan horse backup.pl script that is later executed by root. Similar problems with the ownership/permissions of other files may be present as well.
Which versions are affected by CVE-2021-33393?
It affects 1 product.
Products include Ipfire Ipfire.
How do I fix CVE-2021-33393?
No fix has been published for CVE-2021-33393 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-33393 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-33393 exists.
Public exploit code: 1 Metasploit module, 1 Exploit-DB entry and 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-6r47-xw28-7649.