Описание
Security update for dhcp
This update for dhcp fixes the following issues:
- CVE-2021-25217: A buffer overrun in lease file parsing code can be used to exploit a common vulnerability shared by dhcpd and dhclient (bsc#1186382)
Список пакетов
Container suse/sles/15.6/libguestfs-tools:1.1.1
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Container suse/sles/15.7/libguestfs-tools:1.4.0
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Image SLES15-Azure-BYOS
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Image SLES15-EC2-CHOST-HVM-BYOS
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Image SLES15-EC2-HVM-BYOS
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Image SLES15-GCE-BYOS
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Image SLES15-SAP-Azure
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dhcp-client-4.3.6.P1-6.11.1
Image SLES15-SAP-Azure-BYOS
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dhcp-client-4.3.6.P1-6.11.1
Image SLES15-SAP-Azure-LI-BYOS-Production
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Image SLES15-SAP-Azure-VLI-BYOS-Production
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Image SLES15-SAP-EC2-HVM
dhcp-4.3.6.P1-6.11.1
dhcp-client-4.3.6.P1-6.11.1
Image SLES15-SAP-EC2-HVM-BYOS
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dhcp-client-4.3.6.P1-6.11.1
Image SLES15-SAP-GCE
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Image SLES15-SAP-GCE-BYOS
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Image SLES15-SP1-Azure-BYOS
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Image SLES15-SP1-Azure-HPC-BYOS
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Image SLES15-SP1-CHOST-BYOS-Azure
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Image SLES15-SP1-CHOST-BYOS-EC2
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Image SLES15-SP1-EC2-HPC-HVM-BYOS
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Image SLES15-SP1-EC2-HVM-BYOS
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Image SLES15-SP1-GCE-BYOS
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Image SLES15-SP1-SAP-Azure
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Image SLES15-SP1-SAP-Azure-BYOS
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Image SLES15-SP1-SAP-Azure-LI-BYOS-Production
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Image SLES15-SP1-SAP-Azure-VLI-BYOS-Production
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Image SLES15-SP1-SAP-EC2-HVM
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Image SLES15-SP1-SAP-EC2-HVM-BYOS
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Image SLES15-SP1-SAP-GCE
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Image SLES15-SP1-SAP-GCE-BYOS
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Image SLES15-SP1-SAPCAL-Azure
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Image SLES15-SP1-SAPCAL-EC2-HVM
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Image SLES15-SP1-SAPCAL-GCE
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Image SLES15-SP2-Azure-Basic
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Image SLES15-SP2-Azure-Standard
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Image SLES15-SP2-BYOS-Azure
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Image SLES15-SP2-BYOS-EC2-HVM
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Image SLES15-SP2-BYOS-GCE
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Image SLES15-SP2-CHOST-BYOS-Aliyun
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Image SLES15-SP2-CHOST-BYOS-Azure
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Image SLES15-SP2-CHOST-BYOS-EC2
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Image SLES15-SP2-EC2-ECS-HVM
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Image SLES15-SP2-EC2-HVM
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Image SLES15-SP2-GCE
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Image SLES15-SP2-HPC-Azure
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Image SLES15-SP2-HPC-BYOS-Azure
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Image SLES15-SP2-HPC-BYOS-EC2-HVM
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Image SLES15-SP2-Manager-4-1-Proxy-BYOS-Azure
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Image SLES15-SP2-Manager-4-1-Proxy-BYOS-EC2-HVM
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Image SLES15-SP2-Manager-4-1-Proxy-BYOS-GCE
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Image SLES15-SP2-Manager-4-1-Server-BYOS-Azure
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Image SLES15-SP2-Manager-4-1-Server-BYOS-EC2-HVM
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Image SLES15-SP2-Manager-4-1-Server-BYOS-GCE
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Image SLES15-SP2-SAP-Azure
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Image SLES15-SP2-SAP-Azure-LI-BYOS-Production
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Image SLES15-SP2-SAP-Azure-VLI-BYOS-Production
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Image SLES15-SP2-SAP-BYOS-Azure
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Image SLES15-SP2-SAP-BYOS-EC2-HVM
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Image SLES15-SP2-SAP-BYOS-GCE
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Image SLES15-SP2-SAP-EC2-HVM
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Image SLES15-SP2-SAP-GCE
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Image SLES15-SP3-BYOS-Azure
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Image SLES15-SP3-BYOS-EC2-HVM
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Image SLES15-SP3-BYOS-GCE
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Image SLES15-SP3-CHOST-BYOS-Aliyun
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Image SLES15-SP3-CHOST-BYOS-Azure
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Image SLES15-SP3-CHOST-BYOS-EC2
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Image SLES15-SP3-CHOST-BYOS-SAP-CCloud
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Image SLES15-SP3-EC2-ECS-HVM
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Image SLES15-SP3-EC2-HVM
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Image SLES15-SP3-GCE
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Image SLES15-SP3-HPC-Azure
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Image SLES15-SP3-HPC-BYOS-Azure
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Image SLES15-SP3-HPC-BYOS-EC2-HVM
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Image SLES15-SP3-HPC-BYOS-GCE
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Image SLES15-SP3-Manager-4-2-Proxy-BYOS-Azure
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Image SLES15-SP3-Manager-4-2-Proxy-BYOS-EC2-HVM
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Image SLES15-SP3-Manager-4-2-Proxy-BYOS-GCE
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Image SLES15-SP3-Manager-4-2-Server-BYOS-Azure
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Image SLES15-SP3-Manager-4-2-Server-BYOS-EC2-HVM
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Image SLES15-SP3-Manager-4-2-Server-BYOS-GCE
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Image SLES15-SP3-SAP-Azure
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Image SLES15-SP3-SAP-Azure-LI-BYOS-Production
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Image SLES15-SP3-SAP-Azure-VLI-BYOS-Production
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Image SLES15-SP3-SAP-BYOS-Azure
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Image SLES15-SP3-SAP-BYOS-EC2-HVM
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Image SLES15-SP3-SAP-BYOS-GCE
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Image SLES15-SP3-SAP-EC2-HVM
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Image SLES15-SP3-SAP-GCE
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Image SLES15-SP3-SAPCAL-Azure
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Image SLES15-SP3-SAPCAL-EC2-HVM
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Image SLES15-SP3-SAPCAL-GCE
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Image SLES15-SP4
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Image SLES15-SP4-Azure-Basic
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Image SLES15-SP4-Azure-Standard
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Image SLES15-SP4-BYOS
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Image SLES15-SP4-BYOS-Azure
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Image SLES15-SP4-BYOS-EC2
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Image SLES15-SP4-BYOS-GCE
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Image SLES15-SP4-CHOST-BYOS
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Image SLES15-SP4-CHOST-BYOS-EC2
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Image SLES15-SP4-CHOST-BYOS-SAP-CCloud
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Image SLES15-SP4-EC2
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Image SLES15-SP4-HPC
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Image SLES15-SP4-HPC-Azure
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Image SLES15-SP4-Manager-Server-4-3-EC2-llc
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Image SLES15-SP4-SAP
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Image SLES15-SP4-SAP-Azure
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Image SLES15-SP4-SAP-Azure-LI-BYOS
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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
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
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
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
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
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
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
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
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
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
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
Ссылки
- Link for SUSE-SU-2021:1841-1
- E-Mail link for SUSE-SU-2021:1841-1
- SUSE Security Ratings
- SUSE Bug 1186382
- SUSE CVE CVE-2021-25217 page
Описание
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.
Затронутые продукты
Container suse/sles/15.6/libguestfs-tools:1.1.1:dhcp-4.3.6.P1-6.11.1
Container suse/sles/15.6/libguestfs-tools:1.1.1:dhcp-client-4.3.6.P1-6.11.1
Container suse/sles/15.7/libguestfs-tools:1.4.0:dhcp-4.3.6.P1-6.11.1
Container suse/sles/15.7/libguestfs-tools:1.4.0:dhcp-client-4.3.6.P1-6.11.1
Ссылки
- CVE-2021-25217
- SUSE Bug 1186382
- SUSE Bug 1189843
- SUSE Bug 1189858
- SUSE Bug 1199299
- SUSE Bug 1214270
- SUSE Bug 1218485
- SUSE Bug 1218969
- SUSE Bug 1225674