CVE-2020-26164: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-6f3v-3c9w-7rq7
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CVSS 5.5
CWE-400
Published
Advisory Summary

CVE-2020-26164 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly control the allocation and maintenance of a limited resource.. Remediation is available in the latest vendor maintenance releases.

CVE-2020-26164 at a Glance

CVE Identifier CVE-2020-26164
GHSA Identifier GHSA-6f3v-3c9w-7rq7
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2020-26164

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

Verify Direct and Transitive Dependencies

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

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-26164, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Software, 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

In kdeconnect-kde (aka KDE Connect) before 20.08.2, an attacker on the local network could send crafted packets that trigger use of large amounts of CPU, memory, or network connection slots, aka a Denial of Service attack.

References

Software Security Information SECURITY
https://security.gentoo.org/glsa/202101-16
NVD — CVE-2020-26164 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26164
Security Fix Commit FIX COMMIT
https://github.com/KDE/kdeconnect-kde/commit/024e5f23db8d8ad3449714b906b46094baaffb89
Security Fix Commit FIX COMMIT
https://github.com/KDE/kdeconnect-kde/commit/4fbd01a3d44a0bcca888c49a77ec7cfd10e113d7
Security Fix Commit FIX COMMIT
https://github.com/KDE/kdeconnect-kde/commit/542d94a70c56aa386c8d4d793481ce181b0422e8
Security Fix Commit FIX COMMIT
https://github.com/KDE/kdeconnect-kde/commit/613899be24b6e2a6b3e5cc719efce8ae8a122991
Security Fix Commit FIX COMMIT
https://github.com/KDE/kdeconnect-kde/commit/8112729eb0f13e6947984416118531078e65580d
Security Fix Commit FIX COMMIT
https://github.com/KDE/kdeconnect-kde/commit/ce0f00fc2d3eccb51d0af4eba61a4f60de086a59
bugzilla.suse.com/show_bug.cgi WEB
https://bugzilla.suse.com/show_bug.cgi?id=1176268
Software Source Repository REPOSITORY
https://github.com/KDE/kdeconnect-kde/releases
Software Security Information SECURITY
https://kde.org/info/security/advisory-20201002-1.txt
kdeconnect.kde.org/official WEB
https://kdeconnect.kde.org/official
Software Security Information SECURITY
https://lists.opensuse.org/opensuse-security-announce/2020-10/msg00014.html
Software Security Information SECURITY
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00016.html
Software Security Information SECURITY
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00018.html
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/10/13/4
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/10/13/5
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/10/14/1
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2020/11/30/1

Frequently Asked Questions

What is CVE-2020-26164?
CVE-2020-26164 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-400: Uncontrolled Resource Consumption.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2020-26164?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2020-26164?
CVE-2020-26164 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2020-26164?
CVE-2020-26164 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Maven dependencies for CVE-2020-26164?
Run the dependency tree command: 'mvn dependency:tree'. 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 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-6f3v-3c9w-7rq7",
  "modified" : "2023-02-01T00:30:29Z",
  "published" : "2022-05-24T17:30:16Z",
  "aliases" : [ "CVE-2020-26164" ],
  "details" : "In kdeconnect-kde (aka KDE Connect) before 20.08.2, an attacker on the local network could send crafted packets that trigger use of large amounts of CPU, memory, or network connection slots, aka a Denial of Service attack.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
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    "url" : "https://github.com/KDE/kdeconnect-kde/commit/542d94a70c56aa386c8d4d793481ce181b0422e8"
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    "url" : "https://github.com/KDE/kdeconnect-kde/commit/8112729eb0f13e6947984416118531078e65580d"
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    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00016.html"
  }, {
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    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2020/11/30/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2020-10-07T19:15:00Z"
  }
}