Vulnerability Monitor

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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

Published

2019-10-09T16:15:13.407

Last Modified

2024-11-21T04:09:16.440

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-119
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application isc dhcp ≤ 4.1.2 Yes
Application isc dhcp < 4.2.8 Yes
Application isc dhcp < 4.3.6 Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1-esv Yes
Application isc dhcp 4.1.2 Yes
Application isc dhcp 4.4.0 Yes
References