High severity · published Apr 16, 2020
CVE-2019-18948
An issue was found in Arista EOS
7.5
CVSS
1%
EPSS
No
On KEV
Description
An issue was found in Arista EOS. Specific malformed ARP packets can impact the software forwarding of VxLAN packets. This issue is found in Arista’s EOS VxLAN code, which can allow attackers to crash the VxlanSwFwd agent. This affects EOS 4.21.8M and below releases in the 4.21.x train, 4.22.3M and below releases in the 4.22.x train, 4.23.1F and below releases in the 4.23.x train, and all releases in 4.15, 4.16, 4.17, 4.18, 4.19, 4.20 code train.
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)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EO
Eos · Arista
4.21.0 through 4.21.8m; 4.22.0 through 4.22.3m; 4.23.0 through 4.23.1f; 4.15; 4.16; 4.17; +3 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-18948
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-18948
Patch
https://www.arista.com/en/support/advisories-notices/security-advisories/10292-security-advisory-47
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