rad_decode in FreeRADIUS 0.9.2 and earlier allows remote attackers to cause a denial of…
Priority LOW 30Published · 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
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
rad_decode in FreeRADIUS 0.9.2 and earlier allows remote attackers to cause a denial of service (crash) via a short RADIUS string attribute with a tag, which causes memcpy to be called with a -1 length argument, as demonstrated using the Tunnel-Password attribute.
Why it matters now
EPSS 0.04755 91st percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:* | up to 0.9.2 | Vulnerable | freeradius |
- cpe:2.3:a:freeradius:freeradius:*:*:*:*:*:*:*:* Versions up to 0.9.2 Vulnerable ·freeradius
Remediation
Red Hat 1 advisory
- RHSA-2003:386 Released 2003-12-10 · Red Hat rating Moderatefreeradius security update
- Red Hat Enterprise Linux AS version 3 freeradius-0.9.3-1, freeradius-0.9.3-1.i386, freeradius-0.9.3-1.ia64 +1
- Red Hat Enterprise Linux ES version 3 freeradius-0.9.3-1, freeradius-0.9.3-1.i386, freeradius-0.9.3-1.ia64
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2003:386 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2003:386 |
Timeline
- 2026-10-02 Threatist record created from CVE-2003-0967
- 2026-10-03 Alias added: GHSA-4j6g-2g2g-f47h
References
More Freeradius vulnerabilities
- TI-2019-07466 Race condition in freeradius CVSS 3.1HIGH 7.0
- TI-2024-03351 RADIUS Protocol under RFC2865 is vulnerable to forgery attacks. CVSS 3.1CRITICAL 9.0
- TI-2019-08409 FreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing… CVSS 3.0CRITICAL 9.8
- TI-2017-08061 An FR-GV-202 issue in FreeRADIUS 2.x before 2.2.10 allows "Write overflow in… CVSS 3.0CRITICAL 9.8
- TI-2017-08066 An FR-GV-301 issue in FreeRADIUS 3.x before 3.0.15 allows "Write overflow in… CVSS 3.0CRITICAL 9.8
- TI-2017-06599 The TLS session cache in FreeRADIUS 2.1.1 through 2.1.7, 3.0.x before 3.0.14, 3.1.x… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2003-0967 · CVE Program
- CVE-2003-0967 · NVD
- FIRST EPSS
- GHSA-4j6g-2g2g-f47h · GitHub Advisory Database · CC BY 4.0
- CVE-2003-0967 · 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