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.

• http://packetstormsecurity.com/files/163158/IPFire-2.25-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
• https://github.com/MucahitSaratar/ipfire-2-25-auth-rceExploit, Third Party Advisory
• https://github.com/ipfire/ipfire-2.x/commit/6769d909306d7bdc43d64598872126fcf1b217f6Patch, Third Party Advisory
• https://github.com/ipfire/ipfire-2.x/commits/master?since=2021-05-17&until=2021-05-17Third Party Advisory
• http://packetstormsecurity.com/files/163158/IPFire-2.25-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
• https://github.com/MucahitSaratar/ipfire-2-25-auth-rceExploit, Third Party Advisory
• https://github.com/ipfire/ipfire-2.x/commit/6769d909306d7bdc43d64598872126fcf1b217f6Patch, Third Party Advisory
• https://github.com/ipfire/ipfire-2.x/commits/master?since=2021-05-17&until=2021-05-17Third Party Advisory

Published

Jun 9, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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