CVE-2021-28965

Publication date 12 April 2021

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

The REXML gem before 3.2.5 in Ruby before 2.6.7, 2.7.x before 2.7.3, and 3.x before 3.0.1 does not properly address XML round-trip issues. An incorrect document can be produced after parsing and serializing.

Status

Package Ubuntu Release Status
ruby-rexml 22.04 LTS jammy Not in release
21.10 impish Ignored end of life
21.04 hirsute Ignored end of life
20.10 groovy Ignored end of life
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
ruby2.3 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 2.3.1-2~ubuntu16.04.16
14.04 LTS trusty Not in release
ruby2.5 22.04 LTS jammy Not in release
21.10 impish Not in release
21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Fixed 2.5.1-1ubuntu1.9
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
ruby2.7 21.10 impish
Fixed 2.7.3-2ubuntu1
21.04 hirsute
Fixed 2.7.2-4ubuntu1.1
20.10 groovy
Fixed 2.7.1-3ubuntu1.3
20.04 LTS focal
Fixed 2.7.0-5ubuntu1.4
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
ruby-rexml
ruby2.5
ruby2.7

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

Other references