High severity · published Mar 18, 2021
CVE-2020-27827
A flaw was found in multiple versions of OpenvSwitch
7.5
CVSS
3.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
7.0; 8.0 · source: NVD
FE
Fedora · Fedoraproject
33 · source: NVD
LL
Lldpd · Lldpd Project
before 1.0.8 · source: NVD
OC
Openshift Container Platform · Redhat
4.0 · source: NVD
OP
Openstack · Redhat
10; 13 · source: NVD
OP
Openvswitch · Openvswitch
2.6.0 before 2.6.9; 2.7.0 before 2.7.12; 2.8.0 before 2.8.10; 2.9.0 before 2.9.8; 2.10.0 before 2.10.6; 2.11.0 before 2.11.5; +3 more · source: NVD
SH
Simatic Hmi Unified Comfort Panels Firmware · Siemens
before 17 · source: NVD
SN
Simatic Net CP 1243-1 Firmware · Siemens
All versions, or not specified · source: NVD
SN
Simatic Net CP 1243-8 Irc Firmware · Siemens
All versions, or not specified · source: NVD
SN
Simatic Net CP 1542sp-1 Firmware · Siemens
All versions, or not specified · source: NVD
SN
Simatic Net CP 1542sp-1 Irc Firmware · Siemens
All versions, or not specified · source: NVD
SN
Simatic Net CP 1543-1 Firmware · Siemens
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27827
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27827
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1921438
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/
Mailing List
https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html
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