Summary
Juho Nurminen discovered that the REXML gem bundled with Ruby incorrectly
parsed and serialized XML documents. A remote attacker could possibly use
this issue to perform an XML round-trip attack.
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 16.04 LTS 16.04:LTS | ruby2.3 | 2.3.1-2~ubuntu16.04.16 |
| Ubuntu · 18.04 LTS 18.04:LTS | ruby2.5 | 2.5.1-1ubuntu1.9 |
| Ubuntu · 20.04 LTS 20.04:LTS | ruby2.7 | 2.7.0-5ubuntu1.4 |
Vulnerabilities 1
-
High 7.5
REXML round-trip instability
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.
References
-
report
https://ubuntu.com/security/CVE-2021-28965