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Vulnerability Details CVE-2018-5732

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
Exploit prediction scoring system (EPSS) score
EPSS Score 0.023
EPSS Ranking 84.0%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
Products affected by CVE-2018-5732
  • Isc » Dhcp » Version: 4.1-esv
    cpe:2.3:a:isc:dhcp:4.1-esv
  • Isc » Dhcp » Version: 4.1.0
    cpe:2.3:a:isc:dhcp:4.1.0
  • Isc » Dhcp » Version: 4.1.1
    cpe:2.3:a:isc:dhcp:4.1.1
  • Isc » Dhcp » Version: 4.1.2
    cpe:2.3:a:isc:dhcp:4.1.2
  • Isc » Dhcp » Version: 4.2.0
    cpe:2.3:a:isc:dhcp:4.2.0
  • Isc » Dhcp » Version: 4.2.1
    cpe:2.3:a:isc:dhcp:4.2.1
  • Isc » Dhcp » Version: 4.2.2
    cpe:2.3:a:isc:dhcp:4.2.2
  • Isc » Dhcp » Version: 4.2.3
    cpe:2.3:a:isc:dhcp:4.2.3
  • Isc » Dhcp » Version: 4.2.4
    cpe:2.3:a:isc:dhcp:4.2.4
  • Isc » Dhcp » Version: 4.2.5
    cpe:2.3:a:isc:dhcp:4.2.5
  • Isc » Dhcp » Version: 4.2.6
    cpe:2.3:a:isc:dhcp:4.2.6
  • Isc » Dhcp » Version: 4.2.7
    cpe:2.3:a:isc:dhcp:4.2.7
  • Isc » Dhcp » Version: 4.3.0
    cpe:2.3:a:isc:dhcp:4.3.0
  • Isc » Dhcp » Version: 4.3.1
    cpe:2.3:a:isc:dhcp:4.3.1
  • Isc » Dhcp » Version: 4.3.2
    cpe:2.3:a:isc:dhcp:4.3.2
  • Isc » Dhcp » Version: 4.3.3
    cpe:2.3:a:isc:dhcp:4.3.3
  • Isc » Dhcp » Version: 4.3.5
    cpe:2.3:a:isc:dhcp:4.3.5
  • Isc » Dhcp » Version: 4.4.0
    cpe:2.3:a:isc:dhcp:4.4.0


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