The xntpd ntp (ntpd) daemon before 4.2.0b, when run with the -u option and using a string…
Priority LOW 22Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The xntpd ntp (ntpd) daemon before 4.2.0b, when run with the -u option and using a string to specify the group, uses the group ID of the user instead of the group, which causes xntpd to run with different privileges than intended.
Why it matters now
EPSS 0.00445 38th 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:dave_mills:ntpd:*:*:*:*:*:*:*:* | up to 4.2.0.a.2004-06-17_4.fc3 | Vulnerable | Dave Mills |
- cpe:2.3:a:dave_mills:ntpd:*:*:*:*:*:*:*:* Versions up to 4.2.0.a.2004-06-17_4.fc3 Vulnerable ·Dave Mills
Remediation
Red Hat 1 advisory
- RHSA-2006:0393 Released 2006-08-10 · Red Hat rating Lowntp security update
- Red Hat Enterprise Linux AS version 4 ntp-4.2.0.a.20040617-4.EL4.1, ntp-4.2.0.a.20040617-4.EL4.1.i386, ntp-4.2.0.a.20040617-4.EL4.1.ia64 +1
- Red Hat Enterprise Linux Desktop version 4 ntp-4.2.0.a.20040617-4.EL4.1, ntp-4.2.0.a.20040617-4.EL4.1.i386
- Red Hat Enterprise Linux ES version 4 ntp-4.2.0.a.20040617-4.EL4.1, ntp-4.2.0.a.20040617-4.EL4.1.i386, ntp-4.2.0.a.20040617-4.EL4.1.ia64
- Red Hat Enterprise Linux WS version 4 ntp-4.2.0.a.20040617-4.EL4.1, ntp-4.2.0.a.20040617-4.EL4.1.i386, ntp-4.2.0.a.20040617-4.EL4.1.ia64
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2006:0393 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2006:0393 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2006:0393 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2006:0393 |
Timeline
- 2026-10-02 Threatist record created from CVE-2005-2496
- 2026-10-03 Alias added: GHSA-rr7w-f67q-fhr8
References
More Dave Mills Ntpd vulnerabilities
- TI-2001-00407 Buffer overflow in ntpd ntp daemon 4.0.99k and earlier (aka xntpd and xntp3) allows… CVSS 2.0HIGH 10.0
Sources
- CVE-2005-2496 · CVE Program
- CVE-2005-2496 · NVD
- FIRST EPSS
- GHSA-rr7w-f67q-fhr8 · GitHub Advisory Database · CC BY 4.0
- CVE-2005-2496 · Red Hat security data · CC BY 4.0
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