iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited"…
Priority LOW 11CWE-203Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-203.
Summary
iptables-save in iptables before 1.2.4 records the "--reject-with icmp-host-prohibited" rule as "--reject-with tcp-reset," which causes iptables to generate different responses than specified by the administrator, possibly leading to an information leak.
Why it matters now
EPSS 0.00401 34th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Linux 7.1 | Fixed | RHSA-2001:144 |
| Red Hat Linux 7.2 | Fixed | RHSA-2001:144 |
Timeline
- 2026-10-02 Threatist record created from CVE-2001-1387
- 2026-10-03 Alias added: GHSA-2wcp-prmg-9pr7
References
Advisory 1
More Netfilter Iptables vulnerabilities
- TI-2012-02300 extensions/libxt_tcp.c in iptables through 1.4.21 does not match TCP SYN+FIN packets in… CVSS 2.0HIGH 7.5
- TI-2001-01340 iptables before 1.2.4 does not accurately convert rate limits that are specified on the… CVSS 2.0MEDIUM 5.0
- TI-2019-08482 A buffer overflow in iptables-restore in netfilter iptables 1.8.2 allows an attacker to… CVSS 3.1MEDIUM 4.2
Sources
- CVE-2001-1387 · CVE Program
- CVE-2001-1387 · NVD
- FIRST EPSS
- GHSA-2wcp-prmg-9pr7 · GitHub Advisory Database · CC BY 4.0
- CVE-2001-1387 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences