CVE-2020-27827

CVSS V2 High 7.1 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2020-27827
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2021-03-18T17:15:13
  • Last Modified Date
  • 2023-04-20T07:15:06
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:* 1 OR 1.0.8
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.6.0 2.6.9
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.7.0 2.7.12
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.8.0 2.8.10
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.9.0 2.9.8
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.10.0 2.10.6
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.11.0 2.11.5
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.12.0 2.12.2
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.13.0 2.13.2
cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* 1 OR 2.14.0 2.14.1
AND
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:siemens:simatic_hmi_unified_comfort_panels_firmware:*:*:*:*:*:*:*:* 1 OR 17
cpe:2.3:h:siemens:simatic_hmi_unified_comfort_panels:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_net_cp_1243-1_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_net_cp_1243-1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_net_cp_1243-8_irc_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_net_cp_1243-8_irc:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_net_cp_1542sp-1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_irc_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_net_cp_1542sp-1_irc:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_net_cp_1543-1_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_net_cp_1543-1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_net_cp_1543sp-1_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_net_cp_1543sp-1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:simatic_net_cp_1545-1_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:simatic_net_cp_1545-1:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:tim_1531_irc_firmware:*:*:*:*:*:*:*:* 1 OR 2.2
cpe:2.3:h:siemens:tim_1531_irc:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sinumerik_one_firmware:*:*:*:*:*:*:*:* 1 OR 2.0.1
cpe:2.3:h:siemens:sinumerik_one:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.1
  • Severity
  • HIGH
  • Exploitability Score
  • 8.6
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1921438 Issue Tracking Mitigation Patch Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/
https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html Mailing List Mitigation Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07 Third Party Advisory US Government Resource
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-27827
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27827
History
Created Old Value New Value Data Type Notes
2022-05-10 06:58:36 Added to TrackCVE
2022-12-06 00:02:15 2021-03-18T17:15Z 2021-03-18T17:15:13 CVE Published Date updated
2022-12-06 00:02:15 2022-10-07T02:53:51 CVE Modified Date updated
2022-12-06 00:02:15 Analyzed Vulnerability Status updated
2023-04-19 04:44:27 2023-04-19T04:15:30 CVE Modified Date updated
2023-04-19 04:44:27 Analyzed Modified Vulnerability Status updated
2023-04-19 04:44:27 References updated
2023-04-20 06:12:10 2023-04-20T05:15:37 CVE Modified Date updated
2023-04-20 06:12:10 References updated
2023-04-20 08:11:56 2023-04-20T07:15:06 CVE Modified Date updated
2023-04-20 08:11:57 References updated