CVE-2021-33393 EXPLOIT
8.8
HIGH · CVSS 3.1 · EPSS 59.6% (pctl 99)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 8.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 59.62% — more likely to be exploited than 99% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2021-06-09 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| ipfire | ipfire |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | IPFire 2.25 - Remote Code Execution (Authenticated) | 2021-05-17 |
References
- http://packetstormsecurity.com/files/163158/IPFire-2.25-Remote-Code-Execution.html
- https://github.com/MucahitSaratar/ipfire-2-25-auth-rce
- https://github.com/ipfire/ipfire-2.x/commit/6769d909306d7bdc43d64598872126fcf1b217f6
- https://github.com/ipfire/ipfire-2.x/commits/master?since=2021-05-17&until=2021-05-17
- http://packetstormsecurity.com/files/163158/IPFire-2.25-Remote-Code-Execution.html
- https://github.com/MucahitSaratar/ipfire-2-25-auth-rce
- https://github.com/ipfire/ipfire-2.x/commit/6769d909306d7bdc43d64598872126fcf1b217f6
- https://github.com/ipfire/ipfire-2.x/commits/master?since=2021-05-17&until=2021-05-17
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