CVE-2020-13692: Postgresql Improper Restriction Of XML External Vulnerability
HIGHCVE-2020-13692 is a HIGH (CVSS 7.7) improper restriction of xml external vulnerability (CWE-611: Improper Restriction of XML External Entity Reference) affecting Postgresql libraries in the Maven ecosystem. The issue involves improper restriction of xml external entity reference. Remediation is available by upgrading affected packages to version 42.2.13.
CVE-2020-13692 at a Glance
Security Impact
CVSS: 7.7
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H).
How to Fix CVE-2020-13692
To remediate this vulnerability, upgrade all affected Postgresql dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.2.13</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.postgresqlHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2020-13692, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.postgresqlAnalyze the terminal output to locate any version of Postgresql in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 42.2.13), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.postgresql command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-611: Improper Restriction of XML External Entity Reference, where 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. In Postgresql, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-13692 Affected Postgresql Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.postgresql:postgresql
|
Maven |
≥ 9.4.1212.jre6
< 42.2.13
|
42.2.13
|
References
Frequently Asked Questions
What is CVE-2020-13692?
Which Postgresql versions are affected?
What version fixes CVE-2020-13692?
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What CWE is associated with CVE-2020-13692?
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Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-88cc-g835-76rp",
"modified" : "2024-05-15T06:44:16Z",
"published" : "2022-02-10T00:30:07Z",
"aliases" : [ "CVE-2020-13692" ],
"summary" : "Improper Restriction of XML External Entity Reference",
"details" : "PostgreSQL JDBC Driver (aka PgJDBC) before 42.2.13 allows XXE.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.postgresql:postgresql"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.4.1212.jre6"
}, {
"fixed" : "42.2.13"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-13692"
}, {
"type" : "WEB",
"url" : "https://github.com/pgjdbc/pgjdbc/commit/14b62aca4764d496813f55a43d050b017e01eb65"
}, {
"type" : "WEB",
"url" : "https://jdbc.postgresql.org/documentation/changelog.html#version_42.2.13"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/r00bcc6b2da972e0d6332a4ebc7807e17305d8b8e7fb2ae63d2a3cbfb@%3Ccommits.camel.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/r01ae1b3d981cf2e563e9b5b0a6ea54fb3cac8e9a0512ee5269e3420e@%3Ccommits.camel.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/r0478a1aa9ae0dbd79d8f7b38d0d93fa933ac232e2b430b6f31a103c0@%3Ccommits.camel.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/r1aae77706aab7d89b4fe19be468fc3c73e9cc84ff79cc2c3bd07c05a@%3Ccommits.camel.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/r4bdea189c9991aae7a929d28f575ec46e49ed3d68fa5235825f38a4f@%3Cnotifications.netbeans.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/r631f967db6260d6178740a3314a35d9421facd8212e62320275fa78e@%3Ccommits.camel.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/r7f6d019839df17646ffd0046a99146cacf40492a6c92078f65fd32e0@%3Ccommits.camel.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/rb89f92aba44f524d5c270e0c44ca7aec4704691c37fe106cf73ec977@%3Cnotifications.netbeans.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.apache.org/thread.html/rfe363bf3a46d440ad57fd05c0e313025c7218364bbdc5fd8622ea7ae@%3Ccommits.camel.apache.org%3E"
}, {
"type" : "WEB",
"url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DCCAPM6FSNOC272DLSNQ6YHXS3OMHGJC"
}, {
"type" : "WEB",
"url" : "https://security.netapp.com/advisory/ntap-20200619-0005"
}, {
"type" : "WEB",
"url" : "https://www.debian.org/security/2022/dsa-5196"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-611" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2021-04-14T21:31:45Z",
"nvd_published_at" : "2020-06-04T16:15:00Z"
}
}