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ISC DHCP Client Buffer Overflow Vulnerability

Information

Severity

Severity

Critical

Family

Family

Buffer overflow

CVSSv2 Base

CVSSv2 Base

10.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

13 years ago

Modified

Modified

3 years ago

Summary

This host has installed ISC DHCP Client and is prone to Buffer overflow Vulnerability.

Insight

Insight

The flaw is due to a boundary error within the 'script_write_params()' function in 'client/dhclient.c' which can be exploited to cause a stack-based buffer overflow by sending an overly long subnet-mask option.

Affected Software

Affected Software

ISC DHCP dhclient 4.1 before 4.1.0p1 ISC DHCP dhclient 4.0 before 4.0.1p1 ISC DHCP dhclient 3.1 before 3.1.2p1 ISC DHCP dhclient all versions in 3.0 and 2.0 series.

Solution

Solution

Upgrade to version 4.1.0p1, 4.0.1p1, or 3.1.2p1 or later.

Common Vulnerabilities and Exposures (CVE)