製品・ソフトウェアに関する情報
Open vSwitch におけるリソースの枯渇に関する脆弱性
Title Open vSwitch におけるリソースの枯渇に関する脆弱性
Summary

Open vSwitch には、リソースの枯渇に関する脆弱性が存在します。

Possible impacts サービス運用妨害 (DoS) 状態にされる可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。

Publication Date Sept. 22, 2020, midnight
Registration Date Nov. 30, 2021, 3:47 p.m.
Last Update Nov. 30, 2021, 3:47 p.m.
CVSS3.0 : 重要
Score 7.5
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS2.0 : 危険
Score 7.1
Vector AV:N/AC:M/Au:N/C:N/I:N/A:C
Affected System
lldpd project
lldpd 
レッドハット
Red Hat Enterprise Linux 
Red Hat OpenShift Container Platform 
Red Hat OpenStack 
Red Hat Virtualization 
Fedora Project
Fedora 
Open vSwitch
Open vSwitch 
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
その他
Change Log
No Changed Details Date of change
1 [2021年11月30日]
  掲載
Nov. 30, 2021, 3:47 p.m.

NVD Vulnerability Information
CVE-2020-27827
Summary

A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.

Publication Date March 19, 2021, 2:15 a.m.
Registration Date March 19, 2021, 10:01 a.m.
Last Update Nov. 21, 2024, 2:21 p.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:* 1.0.8
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.6.0 2.6.9
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.7.0 2.7.12
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.8.0 2.8.10
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.9.0 2.9.8
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.10.0 2.10.6
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.11.0 2.11.5
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.12.0 2.12.2
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.13.0 2.13.2
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 2.14.0 2.14.1
Configuration2 or higher or less more than less than
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:siemens:simatic_hmi_unified_comfort_panels_firmware:*:*:*:*:*:*:*:* 17
execution environment
1 cpe:2.3:h:siemens:simatic_hmi_unified_comfort_panels:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:siemens:simatic_net_cp_1243-1_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:siemens:simatic_net_cp_1243-1:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:siemens:simatic_net_cp_1243-8_irc_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:siemens:simatic_net_cp_1243-8_irc:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:siemens:simatic_net_cp_1542sp-1:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_irc_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:siemens:simatic_net_cp_1542sp-1_irc:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:siemens:simatic_net_cp_1543-1_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:siemens:simatic_net_cp_1543-1:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:siemens:simatic_net_cp_1543sp-1_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:siemens:simatic_net_cp_1543sp-1:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:siemens:simatic_net_cp_1545-1_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:siemens:simatic_net_cp_1545-1:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:siemens:tim_1531_irc_firmware:*:*:*:*:*:*:*:* 2.2
execution environment
1 cpe:2.3:h:siemens:tim_1531_irc:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:siemens:sinumerik_one_firmware:*:*:*:*:*:*:*:* 2.0.1
execution environment
1 cpe:2.3:h:siemens:sinumerik_one:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List