OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a…
Priority LOW 27CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a forked child process terminates during PAM authentication, which allows remote attackers to cause a denial of service (client connection refusal) by connecting multiple times to the SSH server, waiting for the password prompt, then disconnecting.
Why it matters now
EPSS 0.0192 80th 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 · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openbsd:openssh:3.8.1p1:*:*:*:*:*:*:* | 3.8.1p1 | Vulnerable | OpenBSD |
| cpe:2.3:o:freebsd:freebsd:5.3:*:*:*:*:*:*:* | 5.3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.3:release:*:*:*:*:*:* | 5.3 release | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.3:releng:*:*:*:*:*:* | 5.3 releng | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.3:stable:*:*:*:*:*:* | 5.3 stable | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.4:pre-release:*:*:*:*:*:* | 5.4 pre-release | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.4:release:*:*:*:*:*:* | 5.4 release | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.4:releng:*:*:*:*:*:* | 5.4 releng | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:5.4:stable:*:*:*:*:*:* | 5.4 stable | Vulnerable | FreeBSD |
- cpe:2.3:a:openbsd:openssh:3.8.1p1:*:*:*:*:*:*:* Versions 3.8.1p1 Vulnerable ·OpenBSD
- cpe:2.3:o:freebsd:freebsd:5.3:*:*:*:*:*:*:* Versions 5.3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.3:release:*:*:*:*:*:* Versions 5.3 release Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.3:releng:*:*:*:*:*:* Versions 5.3 releng Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.3:stable:*:*:*:*:*:* Versions 5.3 stable Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.4:pre-release:*:*:*:*:*:* Versions 5.4 pre-release Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.4:release:*:*:*:*:*:* Versions 5.4 release Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.4:releng:*:*:*:*:*:* Versions 5.4 releng Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:5.4:stable:*:*:*:*:*:* Versions 5.4 stable Vulnerable ·FreeBSD
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-0883
- 2026-10-03 Alias added: GHSA-9x7m-vh7w-2mvh
References
Advisory 2
Sources
- CVE-2006-0883 · CVE Program
- CVE-2006-0883 · NVD
- FIRST EPSS
- GHSA-9x7m-vh7w-2mvh · 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