CVE-2009-0692
Published Jul 14, 2009 · Updated Nov 3, 2026
Original summary
Normalized public record · Updated Nov 3, 2026
Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- ADV-2009-1891 ↗
- www.isc.org ↗
- 35830 ↗
- bugzilla.redhat.com ↗
- 35832 ↗
- SSRT100018 ↗
- 35850 ↗
- 35785 ↗
- VU#410676 ↗
- 35880 ↗
- SUSE-SA:2009:037 ↗
- FEDORA-2009-9075 ↗
Record history
Published Jul 14, 2009 · Last refreshed Nov 3, 2026