Published: 09/10/2019 Updated: 09/01/2020

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 446

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

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

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isc dhcp 4.1-esv
isc dhcp
isc dhcp 4.1.2
isc dhcp 4.4.0

Synopsis Important: dhcp security update Type/Severity Security Advisory: Important Topic An update for dhcp is now available for Red Hat Enterprise Linux 6Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) base score, which ...

Synopsis Important: dhcp security update Type/Severity Security Advisory: Important Topic An update for dhcp is now available for Red Hat Enterprise Linux 7Red Hat Product Security has rated this update as having a security impact of Important A Common Vulnerability Scoring System (CVSS) base score, which ...

Several security issues were fixed in DHCP ...

Several vulnerabilities have been discovered in the ISC DHCP client, relay and server The Common Vulnerabilities and Exposures project identifies the following issues: CVE-2017-3144 It was discovered that the DHCP server does not properly clean up closed OMAPI connections, which can lead to exhaustion of the pool of socket descriptors ...

Debian Bug report logs - #887413 isc-dhcp: CVE-2017-3144: dhcp: omapi code doesn't free socket descriptors when empty message is received allowing denial-of-service Package: src:isc-dhcp; Maintainer for src:isc-dhcp is Debian ISC DHCP Maintainers <isc-dhcp@packagesdebianorg>; Reported by: Salvatore Bonaccorso <carnil@deb ...

Debian Bug report logs - #891786 isc-dhcp: CVE-2018-5732: A specially constructed response from a malicious server can cause a buffer overflow in dhclient Package: src:isc-dhcp; Maintainer for src:isc-dhcp is Debian ISC DHCP Maintainers <isc-dhcp@packagesdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg&gt ...

Debian Bug report logs - #891785 isc-dhcp: CVE-2018-5733: A malicious client can overflow a reference counter in ISC dhcpd Package: src:isc-dhcp; Maintainer for src:isc-dhcp is Debian ISC DHCP Maintainers <isc-dhcp@packagesdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Wed, 28 Feb 2018 20:42 ...

Buffer overflow in dhclient possibly allowing code execution triggered by malicious serverAn out-of-bound memory access flaw was found in the way dhclient processed a DHCP response packet A malicious DHCP server could potentially use this flaw to crash dhclient processes running on DHCP client machines via a crafted DHCP response packet (CVE-2018 ...

Impact: Important Public Date: 2018-02-28 CWE: CWE-119 Bugzilla: 1549960: CVE-2018-5732 dhcp: Buffer ov ...

An out-of-bound memory access flaw was found in the way dhclient processed a DHCP response packet A malicious DHCP server could potentially use this flaw to crash dhclient processes running on DHCP client machines via a crafted DHCP response packet ...

CWE-119 https://kb.isc.org/docs/aa-01565 https://nvd.nist.gov https://access.redhat.com/errata/RHSA-2018:0469 https://usn.ubuntu.com/3586-1/

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CVE-2018-5732

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