CVE-2020-35381: Github.com/buger/jsonparser Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-8vrw-m3j9-j27c
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CVSS 7.5
CWE-125
Published
Advisory Summary

CVE-2020-35381 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-125: Out-of-bounds Read) affecting Github.com/buger/jsonparser libraries in the Go ecosystem. The issue involves denial of service in jsonparser. Remediation is available by upgrading affected packages to version 1.1.1.

CVE-2020-35381 at a Glance

CVE Identifier CVE-2020-35381
GHSA Identifier GHSA-8vrw-m3j9-j27c
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-125: Out-of-bounds Read
Affected Product Github.com/buger/jsonparser
Package Ecosystem Go
Published Date
Last Updated

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).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2020-35381

To remediate this vulnerability, upgrade all affected Github.com/buger/jsonparser dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/buger/jsonparser fixed: 1.1.1 
Upgrade github.com/buger/jsonparser to 1.1.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/buger/jsonparser

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-35381, inspect your project dependencies for Github.com/buger/jsonparser:

inspect dependencies for github.com/buger/jsonparser

Analyze the terminal output to locate any version of Github.com/buger/jsonparser in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. In Github.com/buger/jsonparser, 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

jsonparser before 1.1.1 allows attackers to cause a denial of service via a GET call.

CVE-2020-35381 Affected Github.com/buger/jsonparser Versions

1 component(s)
Fixed Versions:
1.1.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/buger/jsonparser
golang/github.com/buger/jsonparser
Go
< 1.1.1
1.1.1

References

NVD — CVE-2020-35381 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35381
Github.com/buger/jsonparser Source Repository REPOSITORY
https://github.com/buger/jsonparser/issues/219
Github.com/buger/jsonparser Source Repository REPOSITORY
https://github.com/buger/jsonparser/pull/221
Security Fix Commit FIX COMMIT
https://github.com/buger/jsonparser/commit/df3ea76ece10095374fd1c9a22a4fb85a44efc42
Github.com/buger/jsonparser Source Repository REPOSITORY
https://github.com/buger/jsonparser
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/27EA7OGCELV7QFAGVIHODHWKMKGFVIUZ
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LJO5N7YTDEUSTKYTNA372CE6VHCZJWUG
pkg.go.dev/vuln/go-2021-0057 WEB
https://pkg.go.dev/vuln/GO-2021-0057

Frequently Asked Questions

What is CVE-2020-35381?
CVE-2020-35381 is a security vulnerability in Github.com/buger/jsonparser involving Denial of Service in jsonparser under CWE-125: Out-of-bounds Read.
Which Github.com/buger/jsonparser versions are affected?
Affected versions include releases prior to 1.1.1 across affected packages: github.com/buger/jsonparser.
What version fixes CVE-2020-35381?
Upgrading to 1.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/buger/jsonparser affected?
Yes, github.com/buger/jsonparser is affected in releases prior to 1.1.1. Upgrade your dependency to 1.1.1 or later.
What is the CVSS score of CVE-2020-35381?
CVE-2020-35381 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2020-35381?
CVE-2020-35381 is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check Go dependencies for CVE-2020-35381?
Run the dependency tree command: 'inspect dependencies for github.com/buger/jsonparser'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8vrw-m3j9-j27c",
  "modified" : "2024-05-20T19:28:16Z",
  "published" : "2022-05-25T19:21:53Z",
  "aliases" : [ "CVE-2020-35381" ],
  "summary" : "Denial of Service in jsonparser",
  "details" : "jsonparser before 1.1.1 allows attackers to cause a denial of service via a GET call.",
  "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" : "Go",
      "name" : "github.com/buger/jsonparser"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-35381"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/buger/jsonparser/issues/219"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/buger/jsonparser/pull/221"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/buger/jsonparser/commit/df3ea76ece10095374fd1c9a22a4fb85a44efc42"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/buger/jsonparser"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/27EA7OGCELV7QFAGVIHODHWKMKGFVIUZ"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LJO5N7YTDEUSTKYTNA372CE6VHCZJWUG"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2021-0057"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-05-25T19:21:53Z",
    "nvd_published_at" : "2020-12-15T21:15:00Z"
  }
}