Unintended Access in NexentaStor and Illumos SMB Server
CVE-2019-9579

8.1HIGH

Key Information:

Vendor

Illumos

Status
Illumos
Vendor
CVE Published:
26 December 2022

What is CVE-2019-9579?

A security issue has been identified in NexentaStor where the SMB server can be exploited by an attacker with WRITE_XATTR permissions. Due to specific interactions between ZFS extended attributes and the SMB protocol, attackers could gain unauthorized access to modify permissions. The vulnerability arises from the way the SMB server handles certain attribute requests, failing to adequately restrict access to named streams, thus exposing the system to potential malicious activity.

References

https://www.illumos.org/issues/10506
https://www.oracle.com/security-alerts/cpuapr2020.html

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.