Vulnerability Details : CVE-2020-27827
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.
Vulnerability category: Denial of service
Products affected by CVE-2020-27827
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:tim_1531_irc_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_net_cp_1545-1_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_net_cp_1543-1_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_net_cp_1243-1_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_net_cp_1243-8_irc_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_irc_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_net_cp_1543sp-1_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:sinumerik_one_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_hmi_unified_comfort_panels_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_net_cp_1542sp-1_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:openvswitch:openvswitch:*:*:*:*:*:*:*:*
- cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:*
Threat overview for CVE-2020-27827
Top countries where our scanners detected CVE-2020-27827
Top open port discovered on systems with this issue
53
IPs affected by CVE-2020-27827 645,438
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2020-27827!
*Directly or indirectly through your vendors, service providers and 3rd parties.
Powered by
attack surface intelligence
from SecurityScorecard.
Exploit prediction scoring system (EPSS) score for CVE-2020-27827
0.62%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27827
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:N/I:N/A:C |
8.6
|
6.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-27827
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: secalert@redhat.com (Primary)
References for CVE-2020-27827
-
https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html
[ovs-dev] [ADVISORY] CVE-2020-27827: lldp: Externally triggered memory leak.Mailing List;Mitigation;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/
[SECURITY] Fedora 38 Update: lldpd-1.0.16-1.fc38 - package-announce - Fedora Mailing-Lists
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/
[SECURITY] Fedora 36 Update: lldpd-1.0.16-1.fc36 - package-announce - Fedora Mailing-Lists
-
https://security.gentoo.org/glsa/202311-16
Open vSwitch: Multiple Vulnerabilities (GLSA 202311-16) — Gentoo security
-
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/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/
[SECURITY] Fedora 38 Update: lldpd-1.0.16-1.fc38 - package-announce - Fedora Mailing-Lists
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/
[SECURITY] Fedora 37 Update: lldpd-1.0.16-1.fc37 - package-announce - Fedora Mailing-Lists
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/
[SECURITY] Fedora 36 Update: lldpd-1.0.16-1.fc36 - package-announce - Fedora Mailing-Lists
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07
Siemens Industrial Products LLDP | CISAThird Party Advisory;US Government Resource
-
https://bugzilla.redhat.com/show_bug.cgi?id=1921438
1921438 – (CVE-2020-27827) CVE-2020-27827 lldp/openvswitch: denial of service via externally triggered memory leakIssue Tracking;Mitigation;Patch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/
[SECURITY] Fedora 37 Update: lldpd-1.0.16-1.fc37 - package-announce - Fedora Mailing-Lists
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