CVE-2020-36449: Kekbit Command Injection Vulnerability

HIGH
Advisory Identifier: GHSA-g83m-67wh-whpw
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CVSS 8.1
CWE-77
Published
Advisory Summary

CVE-2020-36449 is a HIGH (CVSS 8.1) command injection vulnerability (CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')) affecting Kekbit libraries in the crates.io ecosystem. The issue involves command injection in kekbit. Remediation is available by upgrading affected packages to version 0.3.4.

CVE-2020-36449 at a Glance

CVE Identifier CVE-2020-36449
GHSA Identifier GHSA-g83m-67wh-whpw
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Product Kekbit
Package Ecosystem crates.io
Published Date
Last Updated

Security Impact

CVSS: 8.1

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:H/A:H).

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

How to Fix CVE-2020-36449

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

kekbit fixed: 0.3.4 
Upgrade kekbit to 0.3.4
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 kekbit

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-36449, inspect your project dependencies for Kekbit:

inspect dependencies for kekbit

Analyze the terminal output to locate any version of Kekbit in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.4), 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-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'), where the product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. In Kekbit, 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

An issue was discovered in the kekbit crate before 0.3.4 for Rust. For ShmWriter<H>, Send is implemented without requiring H: Send.

CVE-2020-36449 Affected Kekbit Versions

1 component(s)
Fixed Versions:
0.3.4
Product / Package Ecosystem Affected Versions Fixed Version
kekbit
 crates.io
< 0.3.4
0.3.4

References

NVD — CVE-2020-36449 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36449
Kekbit Source Repository REPOSITORY
https://github.com/motoras/kekbit/issues/34
Kekbit Source Repository REPOSITORY
https://github.com/motoras/kekbit
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0129.html

Frequently Asked Questions

What is CVE-2020-36449?
CVE-2020-36449 is a security vulnerability in Kekbit involving Command injection in kekbit under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection').
Which Kekbit versions are affected?
Affected versions include releases prior to 0.3.4 across affected packages: kekbit.
What version fixes CVE-2020-36449?
Upgrading to 0.3.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is kekbit affected?
Yes, kekbit is affected in releases prior to 0.3.4. Upgrade your dependency to 0.3.4 or later.
What is the CVSS score of CVE-2020-36449?
CVE-2020-36449 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-36449?
CVE-2020-36449 is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') (The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.).
How can I check crates.io dependencies for CVE-2020-36449?
Run the dependency tree command: 'inspect dependencies for kekbit'. 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-g83m-67wh-whpw",
  "modified" : "2021-08-18T20:31:24Z",
  "published" : "2021-08-25T20:57:10Z",
  "aliases" : [ "CVE-2020-36449" ],
  "summary" : "Command injection in kekbit",
  "details" : "An issue was discovered in the kekbit crate before 0.3.4 for Rust. For ShmWriter<H>, Send is implemented without requiring H: Send.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "kekbit"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36449"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/motoras/kekbit/issues/34"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/motoras/kekbit"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0129.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-18T20:31:24Z",
    "nvd_published_at" : "2021-08-08T06:15:00Z"
  }
}