Vulnerability · Published Jun 9, 2021 · Assigned by mitre
CVE-2021-33393
High 8.8
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 59.3% (higher than 99.1% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code.
Severity (CVSS NVD)8.8High
Exploit odds (30 days)59.3%top 0.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling2Metasploit, Public PoC
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.
Affected products (as reported)
References
- https://github.com/MucahitSaratar/ipfire-2-25-auth-rce x_refsource_MISC
- https://github.com/ipfire/ipfire-2.x/commit/6769d909306d7bdc43d64598872126fcf1b217f6 x_refsource_MISC
- https://github.com/ipfire/ipfire-2.x/commits/master?since=2021-05-17&until=2021-05-17 x_refsource_MISC
- http://packetstormsecurity.com/files/163158/IPFire-2.25-Remote-Code-Execution.html x_refsource_MISC