The system configuration control (sysctl) facility in BSD based operating systems OpenBSD…
Priority LOW 26Published · 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 · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The system configuration control (sysctl) facility in BSD based operating systems OpenBSD 2.2 and earlier, and FreeBSD 2.2.5 and earlier, does not properly restrict source routed packets even when the (1) dosourceroute or (2) forwarding variables are set, which allows remote attackers to spoof TCP connections.
Why it matters now
EPSS 0.01364 71st 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:bsdi:bsd_os:*:*:*:*:*:*:*:* | all versions | Vulnerable | Bsdi |
| cpe:2.3:o:freebsd:freebsd:2.2:*:*:*:*:*:*:* | 2.2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:2.2.5:*:*:*:*:*:*:* | 2.2.5 | Vulnerable | FreeBSD |
| cpe:2.3:o:openbsd:openbsd:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:* | 2.1 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:* | 2.2 | Vulnerable | OpenBSD |
- cpe:2.3:o:bsdi:bsd_os:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Bsdi
- cpe:2.3:o:freebsd:freebsd:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:2.2.5:*:*:*:*:*:*:* Versions 2.2.5 Vulnerable ·FreeBSD
- cpe:2.3:o:openbsd:openbsd:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·OpenBSD
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-1999-0305
- 2026-10-03 Alias added: GHSA-hcx2-xwc8-g58x
References
Sources
- CVE-1999-0305 · CVE Program
- CVE-1999-0305 · NVD
- FIRST EPSS
- GHSA-hcx2-xwc8-g58x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences