Skip to content
OpenAdvisories
High DLA-1313-1 2 CVEs

isc-dhcp - security update

Published Mar 22, 2018 · Updated Mar 9, 2026

Ecosystem: Debian

Fixed packages 1

ReleasePackageFixed in
Debian · 7 isc-dhcp 4.2.2.dfsg.1-5+deb70u9

Vulnerabilities 2

  • High 7.5
    CVE-2018-5732

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

    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 …

    ISC ISC DHCP isc-dhcp isc-dhcp Debian Ubuntu Alpine
  • Medium 5.9
    CVE-2018-5733 EPSS 20%

    A malicious client can overflow a reference counter in ISC dhcpd

    A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3…

    ISC ISC DHCP isc-dhcp isc-dhcp Debian Ubuntu Alpine