Security readout for executives and security teams
CVE-2012-2663 is an old iptables rule-matching flaw. On affected versions, firewall rules using TCP --syn may not match packets that combine SYN and FIN flags, creating a possible firewall bypass where administrators expected those packets to be restricted. Exposure is most likely where legacy iptables through 1.4.21 is still used and security policy depends on --syn matching for TCP filtering. The source bundle does not identify specific distributions, appliances, default configurations, or affected CPEs. Prioritize as a legacy exposure check, not an emergency based on current evidence. Systems still relying on old iptables behavior for perimeter or host firewall controls should be reviewed during vulnerability management or firewall modernization work. Mitigation focus: Inventory systems still running iptables through 1.4.21.; Check vendor advisories or backports for CVE-2012-2663 and related CVE-2012-6638 handling.; Move legacy hosts to vendor-supported firewall packages where feasible..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2012-2663 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=826702CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
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