Upstream information

CVE-2021-25217 at MITRE

Description

In ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16, ISC DHCP 4.4.0 -> 4.4.2 (Other branches of ISC DHCP (i.e., releases in the 4.0.x series or lower and releases in the 4.3.x series) are beyond their End-of-Life (EOL) and no longer supported by ISC. From inspection it is clear that the defect is also present in releases from those series, but they have not been officially tested for the vulnerability), The outcome of encountering the defect while reading a lease that will trigger it varies, according to: the component being affected (i.e., dhclient or dhcpd) whether the package was built as a 32-bit or 64-bit binary whether the compiler flag -fstack-protection-strong was used when compiling In dhclient, ISC has not successfully reproduced the error on a 64-bit system. However, on a 32-bit system it is possible to cause dhclient to crash when reading an improper lease, which could cause network connectivity problems for an affected system due to the absence of a running DHCP client process. In dhcpd, when run in DHCPv4 or DHCPv6 mode: if the dhcpd server binary was built for a 32-bit architecture AND the -fstack-protection-strong flag was specified to the compiler, dhcpd may exit while parsing a lease file containing an objectionable lease, resulting in lack of service to clients. Additionally, the offending lease and the lease immediately following it in the lease database may be improperly deleted. if the dhcpd server binary was built for a 64-bit architecture OR if the -fstack-protection-strong compiler flag was NOT specified, the crash will not occur, but it is possible for the offending lease and the lease which immediately followed it to be improperly deleted.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having important severity.

CVSS v3 Scores
  SUSE
Base Score 7.4
Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Access Vector Adjacent Network
Access Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entries: 1186382 [IN_PROGRESS], 1189858 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
HPE Helion Openstack 8
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
HPE-Helion-OpenStack-8-2021-1822
Image SLES15-SP2-CHOST-BYOS-Aliyun
Image SLES15-SP2-CHOST-BYOS-Azure
Image SLES15-SP2-CHOST-BYOS-EC2
Image SLES15-SP3-CHOST-BYOS-Aliyun
Image SLES15-SP3-CHOST-BYOS-Azure
Image SLES15-SP3-CHOST-BYOS-EC2
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
SUSE CaaS Platform 4.0
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SUSE-CAASP-4.0-2021-1841
SUSE Enterprise Storage 6
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-Storage-6-2021-1841
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-HPC-15-SP1-ESPOS-2021-1841
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-HPC-15-SP1-LTSS-2021-1841
SUSE Linux Enterprise High Performance Computing 15-ESPOS
SUSE Linux Enterprise High Performance Computing 15-LTSS
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-HPC-15-2021-1841
SUSE Linux Enterprise Module for Basesystem 15 SP2
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP2-2021-1841
SUSE Linux Enterprise Module for Basesystem 15 SP3
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP3-2021-1841
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP2
  • dhcp-doc >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP2-2021-1841
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP3
  • dhcp-doc >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP3-2021-1841
SUSE Linux Enterprise Module for Server Applications 15 SP2
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP2-2021-1841
SUSE Linux Enterprise Module for Server Applications 15 SP3
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP3-2021-1841
SUSE Linux Enterprise Point of Sale 11 SP3
  • dhcp >= 4.2.4.P2-0.28.12.1
  • dhcp-client >= 4.2.4.P2-0.28.12.1
  • dhcp-relay >= 4.2.4.P2-0.28.12.1
  • dhcp-server >= 4.2.4.P2-0.28.12.1
Patchnames:
sleposp3-dhcp-14740
SUSE Linux Enterprise Server 11 SP4-LTSS
  • dhcp >= 4.2.4.P2-0.28.12.1
  • dhcp-client >= 4.2.4.P2-0.28.12.1
  • dhcp-relay >= 4.2.4.P2-0.28.12.1
  • dhcp-server >= 4.2.4.P2-0.28.12.1
Patchnames:
slessp4-dhcp-14740
SUSE Linux Enterprise Server 12 SP2-BCL
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-BCL-2021-1822
SUSE Linux Enterprise Server 12 SP3-BCL
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-BCL-2021-1822
SUSE Linux Enterprise Server 12 SP3-ESPOS
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-ESPOS-2021-1822
SUSE Linux Enterprise Server 12 SP3-LTSS
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2021-1822
SUSE Linux Enterprise Server 12 SP4-ESPOS
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-ESPOS-2021-1822
SUSE Linux Enterprise Server 12 SP4-LTSS
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-LTSS-2021-1822
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 12 SP5
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SERVER-12-SP5-2021-1822
SUSE Linux Enterprise Server 15 SP1-BCL
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-SLES-15-SP1-BCL-2021-1841
SUSE Linux Enterprise Server 15 SP1-LTSS
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-SLES-15-SP1-LTSS-2021-1841
SUSE Linux Enterprise Server 15-LTSS
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-SLES-15-2021-1841
SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SAP-12-SP3-2021-1822
SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SAP-12-SP4-2021-1822
SUSE Linux Enterprise Server for SAP Applications 15 SP1
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-SLES_SAP-15-SP1-2021-1841
SUSE Linux Enterprise Server for SAP Applications 15
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-SLES_SAP-15-2021-1841
SUSE Linux Enterprise Software Development Kit 12 SP5
  • dhcp-devel >= 4.3.3-10.22.1
Patchnames:
SUSE-SLE-SDK-12-SP5-2021-1822
SUSE Manager Proxy 4.0
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-SUSE-Manager-Proxy-4.0-2021-1841
SUSE Manager Retail Branch Server 4.0
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.0-2021-1841
SUSE Manager Server 4.0
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
SUSE-SLE-Product-SUSE-Manager-Server-4.0-2021-1841
SUSE OpenStack Cloud 8
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-OpenStack-Cloud-8-2021-1822
SUSE OpenStack Cloud 9
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-OpenStack-Cloud-9-2021-1822
SUSE OpenStack Cloud Crowbar 8
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-OpenStack-Cloud-Crowbar-8-2021-1822
SUSE OpenStack Cloud Crowbar 9
  • dhcp >= 4.3.3-10.22.1
  • dhcp-client >= 4.3.3-10.22.1
  • dhcp-relay >= 4.3.3-10.22.1
  • dhcp-server >= 4.3.3-10.22.1
Patchnames:
SUSE-OpenStack-Cloud-Crowbar-9-2021-1822
openSUSE Leap 15.2
  • dhcp >= 4.3.6.P1-lp152.8.6.1
  • dhcp-client >= 4.3.6.P1-lp152.8.6.1
  • dhcp-client-debuginfo >= 4.3.6.P1-lp152.8.6.1
  • dhcp-debuginfo >= 4.3.6.P1-lp152.8.6.1
  • dhcp-debugsource >= 4.3.6.P1-lp152.8.6.1
  • dhcp-devel >= 4.3.6.P1-lp152.8.6.1
  • dhcp-doc >= 4.3.6.P1-lp152.8.6.1
  • dhcp-relay >= 4.3.6.P1-lp152.8.6.1
  • dhcp-relay-debuginfo >= 4.3.6.P1-lp152.8.6.1
  • dhcp-server >= 4.3.6.P1-lp152.8.6.1
  • dhcp-server-debuginfo >= 4.3.6.P1-lp152.8.6.1
Patchnames:
openSUSE-2021-834
openSUSE Leap 15.3
  • dhcp >= 4.3.6.P1-6.11.1
  • dhcp-client >= 4.3.6.P1-6.11.1
  • dhcp-devel >= 4.3.6.P1-6.11.1
  • dhcp-doc >= 4.3.6.P1-6.11.1
  • dhcp-relay >= 4.3.6.P1-6.11.1
  • dhcp-server >= 4.3.6.P1-6.11.1
Patchnames:
openSUSE-SLE-15.3-2021-1841


First public cloud image revisions this CVE is fixed in:


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
Carwos 1 dhcp Affected
HPE Helion OpenStack 8 dhcp Released
SUSE CaaS Platform 4.0 dhcp Released
SUSE Enterprise Storage 6 dhcp Released
SUSE Linux Enterprise High Performance Computing 12 SP5 dhcp Released
SUSE Linux Enterprise High Performance Computing 15 LTSS dhcp Released
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS dhcp Released
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS dhcp Released
SUSE Linux Enterprise Module for Basesystem 15 SP2 dhcp Released
SUSE Linux Enterprise Module for Basesystem 15 SP3 dhcp Released
SUSE Linux Enterprise Module for Server Applications 15 SP2 dhcp Released
SUSE Linux Enterprise Module for Server Applications 15 SP3 dhcp Released
SUSE Linux Enterprise Point of Service 11 SP3 dhcp Released
SUSE Linux Enterprise Server 11 SP4 LTSS dhcp Released
SUSE Linux Enterprise Server 12 SP2 BCL dhcp Released
SUSE Linux Enterprise Server 12 SP2 LTSS ERICSSON dhcp Released
SUSE Linux Enterprise Server 12 SP2 LTSS SAP dhcp Released
SUSE Linux Enterprise Server 12 SP3 BCL dhcp Released
SUSE Linux Enterprise Server 12 SP3 ESPOS dhcp Released
SUSE Linux Enterprise Server 12 SP3 LTSS dhcp Released
SUSE Linux Enterprise Server 12 SP4 ESPOS dhcp Released
SUSE Linux Enterprise Server 12 SP4 LTSS dhcp Released
SUSE Linux Enterprise Server 12 SP5 dhcp Released
SUSE Linux Enterprise Server 15 LTSS dhcp Released
SUSE Linux Enterprise Server 15 SP1 Business Critical Linux dhcp Released
SUSE Linux Enterprise Server 15 SP1 LTSS dhcp Released
SUSE Linux Enterprise Server ESPOS 15 dhcp Released
SUSE Linux Enterprise Server for SAP Applications 12 SP3 dhcp Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4 dhcp Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 dhcp In progress
SUSE Linux Enterprise Server for SAP Applications 15 dhcp Released
SUSE Linux Enterprise Server for SAP Applications 15 SP1 dhcp Released
SUSE Linux Enterprise Software Development Kit 12 SP5 dhcp Released
SUSE Manager Proxy 4.0 dhcp Released
SUSE Manager Retail Branch Server 4.0 dhcp Released
SUSE Manager Server 4.0 dhcp Released
SUSE OpenStack Cloud 8 dhcp Released
SUSE OpenStack Cloud 9 dhcp Released
SUSE OpenStack Cloud Crowbar 8 dhcp Released
SUSE OpenStack Cloud Crowbar 9 dhcp Released