Description
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: 2019-10-09
Score: 7.5 High
EPSS: 2.5% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to the patched release most closely related to your current version of DHCP. ISC DHCP releases are available from https://www.isc.org/downloads. >= DHCP 4.1-ESV-R15-P1 >= DHCP 4.3.6-P1 >= DHCP 4.4.1

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1313-1 isc-dhcp security update
Debian DSA Debian DSA DSA-4133-1 isc-dhcp security update
EUVD EUVD EUVD-2018-17501 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
Ubuntu USN Ubuntu USN USN-3586-1 DHCP vulnerabilities
Ubuntu USN Ubuntu USN USN-3586-2 DHCP vulnerabilities
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: isc

Published:

Updated: 2024-09-16T18:19:36.136Z

Reserved: 2018-01-17T00:00:00.000Z

Link: CVE-2018-5732

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-10-09T16:15:13.407

Modified: 2024-11-21T04:09:16.440

Link: CVE-2018-5732

cve-icon Redhat

Severity : Important

Publid Date: 2018-02-28T00:00:00Z

Links: CVE-2018-5732 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses