Vulnerability Details : CVE-2021-28965
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.
Vulnerability category: XML external entity (XXE) injection
Exploit prediction scoring system (EPSS) score for CVE-2021-28965
Probability of exploitation activity in the next 30 days: 0.07%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 28 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-28965
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
[email protected] |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
[email protected] |
CWE ids for CVE-2021-28965
-
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.Assigned by: [email protected] (Primary)
References for CVE-2021-28965
-
https://www.ruby-lang.org/en/news/2021/04/05/xml-round-trip-vulnerability-in-rexml-cve-2021-28965/
Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/WTVFTLFVCSUE5CXHINJEUCKSHU4SWDMT/
Mailing List;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20210528-0003/
Third Party Advisory
Products affected by CVE-2021-28965
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
- cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*