CVE-2020-5319: Out-of-bounds Read
Dell EMC Unity, Dell EMC Unity XT, and Dell EMC UnityVSA versions prior to 5.0.2.0.5.009 contain a Denial of Service vulnerability on NAS Server SSH implementation that is used to provide SFTP service on a NAS server. A remote unauthenticated attacker may potentially exploit this vulnerability and cause a Denial of Service (Storage Processor Panic) by sending an out of order SSH protocol sequence.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Dell EMC Unity / Unity XT / UnityVSAto a version that resolves this vulnerability.Fixed in 5.0.2.0.5.009 - Compensating control
Mitigate the DoS risk by preventing external/unauthenticated clients from reaching the NAS server SSH service that provides SFTP (e.g., restrict SSH access to trusted IPs via firewall/ACL) until the affected systems are upgraded.
Event History
Frequently Asked Questions
What is CVE-2020-5319?
CVE-2020-5319 is a Denial of Service vulnerability found in Dell EMC Unity, Dell EMC Unity XT, and Dell EMC UnityVSA versions prior to 5.0.2.0.5.009.
How severe is CVE-2020-5319?
CVE-2020-5319 has a severity score of 7.5 (high).
What software versions are affected by CVE-2020-5319?
Dell EMC Unity, Dell EMC Unity XT, and Dell EMC UnityVSA versions prior to 5.0.2.0.5.009 are affected by CVE-2020-5319.
How can CVE-2020-5319 be exploited?
CVE-2020-5319 can be exploited by a remote unauthenticated attacker through the NAS Server SSH implementation.
Is there a fix for CVE-2020-5319?
Yes, upgrading to version 5.0.2.0.5.009 or later of Dell EMC Unity, Dell EMC Unity XT, or Dell EMC UnityVSA will fix CVE-2020-5319.