CVE-2020-27827
OpenvSwitch LLDP Denial of Service Vulnerability
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.
INFO
Published Date :
March 18, 2021, 5:15 p.m.
Last Modified :
Nov. 26, 2023, 11:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2020-27827
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-27827.
| URL | Resource |
|---|---|
| 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%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/ | |
| https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html | Mailing List Mitigation Vendor Advisory |
| https://security.gentoo.org/glsa/202311-16 | |
| https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07 | Third Party Advisory US Government Resource |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-27827 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-27827 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 26, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://security.gentoo.org/glsa/202311-16 [No types assigned] -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/ [No types assigned] Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/ [No types assigned] Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/ [No types assigned] Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/ Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/ Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/ -
CVE Modified by [email protected]
Apr. 20, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 20, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 19, 2023
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/ [No Types Assigned] -
Modified Analysis by [email protected]
Oct. 07, 2022
Action Type Old Value New Value Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf Patch, Third Party Advisory Changed Reference Type https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07 No Types Assigned https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07 Third Party Advisory, US Government Resource Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_hmi_unified_comfort_panels_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 17 OR cpe:2.3:h:siemens:simatic_hmi_unified_comfort_panels:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_net_cp_1243-1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_net_cp_1243-1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_net_cp_1243-8_irc_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_net_cp_1243-8_irc:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_net_cp_1542sp-1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_irc_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_net_cp_1542sp-1_irc:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_net_cp_1543-1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_net_cp_1543-1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_net_cp_1543sp-1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_net_cp_1543sp-1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:simatic_net_cp_1545-1_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:siemens:simatic_net_cp_1545-1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:tim_1531_irc_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.2 OR cpe:2.3:h:siemens:tim_1531_irc:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:siemens:sinumerik_one_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.0.1 OR cpe:2.3:h:siemens:sinumerik_one:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Aug. 04, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:redhat:openstack:13.0:*:*:*:*:*:*:* OR *cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 02, 2021
Action Type Old Value New Value Added Reference https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 13, 2021
Action Type Old Value New Value Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 29, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1921438 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1921438 Issue Tracking, Mitigation, Patch, Third Party Advisory Changed Reference Type https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html No Types Assigned https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html Mailing List, Mitigation, Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.8 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.6.0 up to (excluding) 2.6.9 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.7.0 up to (excluding) 2.7.12 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.8.0 up to (excluding) 2.8.10 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.9.0 up to (excluding) 2.9.8 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.10.0 up to (excluding) 2.10.6 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.11.0 up to (excluding) 2.11.5 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.12.0 up to (excluding) 2.12.2 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.13.0 up to (excluding) 2.13.2 *cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:* versions from (including) 2.14.0 up to (excluding) 2.14.1 Added CPE Configuration OR *cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openstack:13.0:*:*:*:*:*:*:* *cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-27827 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-27827
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.62 }} 0.04%
score
0.79271
percentile