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CVE-2021-37533

Publication date 3 December 2022

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Prior to Apache Commons Net 3.9.0, Net's FTP client trusts the host from PASV response by default. A malicious server can redirect the Commons Net code to use a different host, but the user has to connect to the malicious server in the first place. This may lead to leakage of information about services running on the private network of the client. The default in version 3.9.0 is now false to ignore such hosts, as cURL does. See https://issues.apache.org/jira/browse/NET-711.

Status

Package Ubuntu Release Status
libcommons-net-java 23.04 lunar
Not affected
22.10 kinetic
Fixed 3.6-1+deb11u1build0.22.10.1
22.04 LTS jammy
Fixed 3.6-1+deb11u1build0.22.04.1
20.04 LTS focal
Fixed 3.6-1+deb11u1build0.20.04.1
18.04 LTS bionic
Fixed 3.6-1+deb11u1build0.18.04.1
16.04 LTS xenial
14.04 LTS trusty Ignored end of standard support

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Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N