CVE-2020-28491: Jackson dataformat cbor Denial of Service Vulnerability
HIGHCVE-2020-28491 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Jackson dataformat cbor libraries in the Maven ecosystem. The issue involves denial of service (dos) in jackson dataformat cbor. Remediation is available by upgrading affected packages to version 2.11.4, 2.12.1.
CVE-2020-28491 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
How to Fix CVE-2020-28491
To remediate this vulnerability, upgrade all affected Jackson dataformat cbor 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>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-cbor</artifactId>
<version>2.11.4</version>
</dependency><dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-cbor</artifactId>
<version>2.12.1</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=com.fasterxml.jackson.dataformatHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2020-28491, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=com.fasterxml.jackson.dataformatAnalyze the terminal output to locate any version of Jackson dataformat cbor in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.11.4), your application is affected.
Note: The mvn dependency:tree -Dincludes=com.fasterxml.jackson.dataformat 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-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Jackson dataformat cbor, 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-2020-28491 Affected Jackson dataformat cbor Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
com.fasterxml.jackson.dataformat:jackson-dataformat-cbor
|
Maven |
≥ 2.8.0rc1
< 2.11.4
|
2.11.4
|
|
com.fasterxml.jackson.dataformat:jackson-dataformat-cbor
|
Maven |
≥ 2.12.0rc1
< 2.12.1
|
2.12.1
|
References
Frequently Asked Questions
What is CVE-2020-28491?
Which Jackson dataformat cbor versions are affected?
What version fixes CVE-2020-28491?
Is jackson-dataformat-cbor affected?
What is the CVSS score of CVE-2020-28491?
What CWE is associated with CVE-2020-28491?
How can I check Maven dependencies for CVE-2020-28491?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-xmc8-26q4-qjhx",
"modified" : "2023-03-27T15:11:51Z",
"published" : "2021-12-09T19:17:21Z",
"aliases" : [ "CVE-2020-28491" ],
"summary" : "Denial of Service (DoS) in Jackson Dataformat CBOR",
"details" : "This affects the package com.fasterxml.jackson.dataformat:jackson-dataformat-cbor from 2.8.0-rc1 and before 2.11.4, from 2.12.0-rc1 and before 2.12.1. Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "com.fasterxml.jackson.dataformat:jackson-dataformat-cbor"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.8.0rc1"
}, {
"fixed" : "2.11.4"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "com.fasterxml.jackson.dataformat:jackson-dataformat-cbor"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.12.0rc1"
}, {
"fixed" : "2.12.1"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-28491"
}, {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-dataformats-binary/issues/186"
}, {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-dataformats-binary/commit/3d7de83423f8f68f8e9a0c8250084e11818544c7"
}, {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-dataformats-binary/commit/de072d314af8f5f269c8abec6930652af67bc8e6"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/FasterXML/jackson-dataformats-binary"
}, {
"type" : "WEB",
"url" : "https://snyk.io/vuln/SNYK-JAVA-COMFASTERXMLJACKSONDATAFORMAT-1047329"
}, {
"type" : "WEB",
"url" : "https://www.oracle.com/security-alerts/cpujul2022.html"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-770" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2021-03-16T00:43:00Z",
"nvd_published_at" : "2021-02-18T16:15:00Z"
}
}