CVE-2021-33393

EPSS 58.7%

Vexday Risk Score

50Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Functional exploit

Popular PoC on GitHub (1 stars) — exploitation code widely available.

CVSS —EPSS 58.7%KEV nãoPoC públicaNuclei —Metasploit simPatch —

Lifecycle

17 May 2021Metasploit module available

17 May 2021Public PoC

09 Jun 2021Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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

n/a · n/a

public PoCs found — 3

githubgithub.com/joaoaugustom/IPFire_2.25_RCE_Authenticated★ 1 cve_referencepacketstormsecurity.com/files/163158/IPFire-2.25-Remote-Code-Execution.htmlunverified exploitdbwww.exploit-db.com/exploits/49869unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://packetstormsecurity.com/files/163158/IPFire-2.25-Remote-Code-Execution.html 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 https://github.com/MucahitSaratar/ipfire-2-25-auth-rce