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TI-2021-12837 Aliases CVE-2021-33393GHSA-6r47-xw28-7649

lfs/backup in IPFire 2.25-core155 does not ensure that /var/ipfire/backup/bin/backup.pl…

Priority HIGH 72Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.59349 99th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 15

CPEVersionsRoleVendor
cpe:2.3:a:ipfire:ipfire:*:*:*:*:*:*:*:*before 2.25VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update141:*:*:*:*:*:*2.25 core_update141VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update142:*:*:*:*:*:*2.25 core_update142VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update143:*:*:*:*:*:*2.25 core_update143VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update144:*:*:*:*:*:*2.25 core_update144VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update145:*:*:*:*:*:*2.25 core_update145VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update146:*:*:*:*:*:*2.25 core_update146VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update147:*:*:*:*:*:*2.25 core_update147VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update148:*:*:*:*:*:*2.25 core_update148VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update149:*:*:*:*:*:*2.25 core_update149VulnerableIPFire.org
  • cpe:2.3:a:ipfire:ipfire:*:*:*:*:*:*:*:* Versions before 2.25 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update141:*:*:*:*:*:* Versions 2.25 core_update141 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update142:*:*:*:*:*:* Versions 2.25 core_update142 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update143:*:*:*:*:*:* Versions 2.25 core_update143 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update144:*:*:*:*:*:* Versions 2.25 core_update144 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update145:*:*:*:*:*:* Versions 2.25 core_update145 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update146:*:*:*:*:*:* Versions 2.25 core_update146 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update147:*:*:*:*:*:* Versions 2.25 core_update147 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update148:*:*:*:*:*:* Versions 2.25 core_update148 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update149:*:*:*:*:*:* Versions 2.25 core_update149 Vulnerable ·IPFire.org
Show 5 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:ipfire:ipfire:2.25:core_update150:*:*:*:*:*:*2.25 core_update150VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update151:*:*:*:*:*:*2.25 core_update151VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update152:*:*:*:*:*:*2.25 core_update152VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update155:*:*:*:*:*:*2.25 core_update155VulnerableIPFire.org
cpe:2.3:a:ipfire:ipfire:2.25:core_update156:*:*:*:*:*:*2.25 core_update156VulnerableIPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update150:*:*:*:*:*:* Versions 2.25 core_update150 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update151:*:*:*:*:*:* Versions 2.25 core_update151 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update152:*:*:*:*:*:* Versions 2.25 core_update152 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update155:*:*:*:*:*:* Versions 2.25 core_update155 Vulnerable ·IPFire.org
  • cpe:2.3:a:ipfire:ipfire:2.25:core_update156:*:*:*:*:*:* Versions 2.25 core_update156 Vulnerable ·IPFire.org

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33393
  2. 2026-10-03 Alias added: GHSA-6r47-xw28-7649

References

Exploit 2

Patch 1

Advisory 1

  • TI-2017-07141 IPFire 2.19 has a Remote Command Injection vulnerability in ids.cgi via the OINKCODE… CVSS 3.0HIGH 8.8
  • TI-2025-32283 IPFire 2.29 DNS management interface (dns.cgi) fails to properly sanitize user-supplied… CVSS 3.1MEDIUM 6.1
  • TI-2025-32282 IPFire 2.29 web-based firewall interface (firewall.cgi) fails to sanitize several rule… CVSS 3.1MEDIUM 5.4
  • TI-2025-24444 IPFire < v2.29 Command Injection via Proxy Report Creation CVSS 4.0HIGH 8.7
  • TI-2018-11622 An authenticated command injection vulnerability exists in IPFire Firewall before 2.21… CVSS 3.1HIGH 8.8
  • TI-2025-24445 IPFire < v2.29 Command Injection via URL Filter Blacklist CVSS 4.0HIGH 8.7
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences