CVE Vulnerabilities

CVE-2019-3765

Incorrect Permission Assignment for Critical Resource

Published: Oct 09, 2019 | Modified: Oct 17, 2019
CVSS 3.x
8.1
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.x
5.5 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

Dell EMC Avamar Server versions 7.4.1, 7.5.0, 7.5.1, 18.2 and 19.1 and Dell EMC Integrated Data Protection Appliance (IDPA) versions 2.0, 2.1, 2.2, 2.3 and 2.4 contain an Incorrect Permission Assignment for Critical Resource vulnerability. A remote authenticated malicious user potentially could exploit this vulnerability to view or modify sensitive backup data. This could be used to make backups corrupt or potentially to trick a user into restoring a backup with malicious files in place.

Weakness

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

Affected Software

Name Vendor Start Version End Version
Emc_avamar_server Dell 7.4.1 (including) 7.4.1 (including)
Emc_avamar_server Dell 7.5.0 (including) 7.5.0 (including)
Emc_avamar_server Dell 7.5.1 (including) 7.5.1 (including)
Emc_avamar_server Dell 18.2 (including) 18.2 (including)
Emc_avamar_server Dell 19.1 (including) 19.1 (including)
Emc_integrated_data_protection_appliance Dell 2.0 (including) 2.4 (including)

Potential Mitigations

  • Run the code in a “jail” or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
  • OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.

References