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centosCentOS ProjectCESA-2021:2357
HistoryJun 14, 2021 - 6:46 p.m.

dhclient, dhcp security update

2021-06-1418:46:22
CentOS Project
lists.centos.org
182
dynamic host configuration protocol
centos
security advisory

CVSS2

3.3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.4

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS

0.003

Percentile

68.3%

JSON

CentOS Errata and Security Advisory CESA-2021:2357

The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network.

Security Fix(es):

  • dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient (CVE-2021-25217)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2021-June/086125.html

Affected packages:
dhclient
dhcp
dhcp-common
dhcp-devel
dhcp-libs

Upstream details at:
https://access.redhat.com/errata/RHSA-2021:2357

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(RHSA-2021:2418) Important: dhcp security update
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Important: dhcp
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CVSS2

3.3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.4

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS

0.003

Percentile

68.3%

JSON
Related for CESA-2021:2357
nessus60suse2prion1mageia1osv6openvas25redhat15cve1nvd1amazon2ibm3almalinux1rocky1oraclelinux3redhatcve1cbl_mariner2slackware1veracode1f51debiancve1fedora2archlinux2ubuntucve1freebsd1photon5cloudlinux1ubuntu2cvelist1alpinelinux1cloudfoundry1debian1gentoo1ics1