Vulnerability in Ipfire
CVE-2021-33393
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.593 (99.1th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.587 · newest: 0.593 · change: +0.006
Affected products
- Ipfire — versions 2.25
Public proof-of-concept exploits
References
- github.com/MucahitSaratar/ipfire-2-25-auth-rce (Exploit, Third Party Advisory)
- github.com/ipfire/ipfire-2.x/commit/6769d909306d7bdc43d64598872126fcf1b217f6 (Patch, Third Party Advisory)
- github.com/ipfire/ipfire-2.x/commits/master (Third Party Advisory)
- packetstormsecurity.com/files/163158/IPFire-2.25-Remote-Code-Execution.html (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33393?
- CVE-2021-33393 is a high-severity vulnerability in Ipfire. CVSS score: 8.8/10. Published 2021-06-09.
- How severe is CVE-2021-33393?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-33393 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.