CVE-2018-5732

A specially constructed response from a malicious server can cause a buffer overflow in dhclient

High · published October 9, 2019

CVSS v3.0
7.5
EPSS
5%
Percentile
92.5
In the wild
Unconfirmed
What it is

Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server (or an entity masquerading as a server) to cause a buffer overflow (and resulting crash) in dhclient by sending a response containing a specially constructed options section. Affects ISC DHCP versions 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0

The record
Technical detail
CVSS v3.0
7.5 · HIGH
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.05244 · 92.5th percentile
Published
2019-10-09T14:17Z
EPSS history
Timeline
  • 09 OCT 14:17Z
    A specially constructed response from a malicious server can cause a buffer overflow in dhclient
    cvelistv5