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TI-2012-04743 Aliases CVE-2012-5642GHSA-mxxq-p5rj-2jcc

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the…

Priority LOW 38Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Partial · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

Why it matters now

EPSS 0.03123 87th percentileScored 2026-11-07
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 · 34

CPEVersionsRoleVendor
cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:*up to 0.8.7.1Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.1.0:*:*:*:*:*:*:*0.1.0Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.1.1:*:*:*:*:*:*:*0.1.1Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.1.2:*:*:*:*:*:*:*0.1.2Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.3.0:*:*:*:*:*:*:*0.3.0Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.3.1:*:*:*:*:*:*:*0.3.1Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.4.0:*:*:*:*:*:*:*0.4.0Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.4.1:*:*:*:*:*:*:*0.4.1Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.5.0:*:*:*:*:*:*:*0.5.0Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.5.1:*:*:*:*:*:*:*0.5.1Vulnerablefail2ban
  • cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:* Versions up to 0.8.7.1 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.1.0:*:*:*:*:*:*:* Versions 0.1.0 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.1.1:*:*:*:*:*:*:* Versions 0.1.1 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.1.2:*:*:*:*:*:*:* Versions 0.1.2 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.3.0:*:*:*:*:*:*:* Versions 0.3.0 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.3.1:*:*:*:*:*:*:* Versions 0.3.1 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.4.0:*:*:*:*:*:*:* Versions 0.4.0 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.4.1:*:*:*:*:*:*:* Versions 0.4.1 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.5.0:*:*:*:*:*:*:* Versions 0.5.0 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.5.1:*:*:*:*:*:*:* Versions 0.5.1 Vulnerable ·fail2ban
Show 24 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:fail2ban:fail2ban:0.5.2:*:*:*:*:*:*:*0.5.2Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.5.3:*:*:*:*:*:*:*0.5.3Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.5.4:*:*:*:*:*:*:*0.5.4Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.5.5:*:*:*:*:*:*:*0.5.5Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.6.0:*:*:*:*:*:*:*0.6.0Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.6.1:*:*:*:*:*:*:*0.6.1Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.0:*:*:*:*:*:*:*0.7.0Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.1:*:*:*:*:*:*:*0.7.1Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.2:*:*:*:*:*:*:*0.7.2Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.3:*:*:*:*:*:*:*0.7.3Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.4:*:*:*:*:*:*:*0.7.4Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.5:*:*:*:*:*:*:*0.7.5Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.6:*:*:*:*:*:*:*0.7.6Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.7:*:*:*:*:*:*:*0.7.7Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.8:*:*:*:*:*:*:*0.7.8Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.7.9:*:*:*:*:*:*:*0.7.9Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.8.0:*:*:*:*:*:*:*0.8.0Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.8.1:*:*:*:*:*:*:*0.8.1Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.8.2:*:*:*:*:*:*:*0.8.2Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.8.3:*:*:*:*:*:*:*0.8.3Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.8.4:*:*:*:*:*:*:*0.8.4Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.8.5:*:*:*:*:*:*:*0.8.5Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.8.6:*:*:*:*:*:*:*0.8.6Vulnerablefail2ban
cpe:2.3:a:fail2ban:fail2ban:0.8.7:*:*:*:*:*:*:*0.8.7Vulnerablefail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.5.2:*:*:*:*:*:*:* Versions 0.5.2 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.5.3:*:*:*:*:*:*:* Versions 0.5.3 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.5.4:*:*:*:*:*:*:* Versions 0.5.4 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.5.5:*:*:*:*:*:*:* Versions 0.5.5 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.6.0:*:*:*:*:*:*:* Versions 0.6.0 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.6.1:*:*:*:*:*:*:* Versions 0.6.1 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.0:*:*:*:*:*:*:* Versions 0.7.0 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.1:*:*:*:*:*:*:* Versions 0.7.1 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.2:*:*:*:*:*:*:* Versions 0.7.2 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.3:*:*:*:*:*:*:* Versions 0.7.3 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.4:*:*:*:*:*:*:* Versions 0.7.4 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.5:*:*:*:*:*:*:* Versions 0.7.5 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.6:*:*:*:*:*:*:* Versions 0.7.6 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.7:*:*:*:*:*:*:* Versions 0.7.7 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.8:*:*:*:*:*:*:* Versions 0.7.8 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.7.9:*:*:*:*:*:*:* Versions 0.7.9 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.8.0:*:*:*:*:*:*:* Versions 0.8.0 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.8.1:*:*:*:*:*:*:* Versions 0.8.1 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.8.2:*:*:*:*:*:*:* Versions 0.8.2 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.8.3:*:*:*:*:*:*:* Versions 0.8.3 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.8.4:*:*:*:*:*:*:* Versions 0.8.4 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.8.5:*:*:*:*:*:*:* Versions 0.8.5 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.8.6:*:*:*:*:*:*:* Versions 0.8.6 Vulnerable ·fail2ban
  • cpe:2.3:a:fail2ban:fail2ban:0.8.7:*:*:*:*:*:*:* Versions 0.8.7 Vulnerable ·fail2ban

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2012-5642
  2. 2026-10-03 Alias added: GHSA-mxxq-p5rj-2jcc

References

Patch 1

Advisory 3

Other 5

  • TI-2021-12417 Possible RCE vulnerability in mailing action using mailutils (mail-whois) CVSS 3.1HIGH 8.1
  • TI-2007-04181 fail2ban 0.8 and earlier does not properly parse sshd log files, which allows remote… CVSS 2.0MEDIUM 6.8
  • TI-2013-05868 config/filter.d/cyrus-imap.conf in the cyrus-imap filter in Fail2ban before 0.8.11 allows… CVSS 2.0MEDIUM 5.0
  • TI-2013-05867 config/filter.d/postfix.conf in the postfix filter in Fail2ban before 0.8.11 allows… CVSS 2.0MEDIUM 5.0
  • TI-2013-01945 The apache-auth.conf, apache-nohome.conf, apache-noscript.conf, and apache-overflows.conf… CVSS 2.0MEDIUM 5.0
  • TI-2006-06066 fail2ban 0.7.4 and earlier does not properly parse sshd log files, which allows remote… CVSS 2.0MEDIUM 5.0
See all 8 →

Sources

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