CVE-2020-13759: Vm memory Improper Synchronization And Race Condition Vulnerability

HIGH
Advisory Identifier: GHSA-mm4m-qg48-f7wc
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CVSS 7.5
CWE-662 CWE-362
Published
Advisory Summary

CVE-2020-13759 is a HIGH (CVSS 7.5) improper synchronization and race condition vulnerability (CWE-662: Improper Synchronization) affecting Vm memory libraries in the crates.io ecosystem. The issue involves improper synchronization and race condition in vm-memory. Remediation is available by upgrading affected packages to version 0.1.1, 0.2.1.

CVE-2020-13759 at a Glance

CVE Identifier CVE-2020-13759
GHSA Identifier GHSA-mm4m-qg48-f7wc
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-662: Improper Synchronization
Affected Product Vm memory
Package Ecosystem crates.io
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-2020-13759

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

vm-memory fixed: 0.1.1 
Upgrade vm-memory to 0.1.1
vm-memory fixed: 0.2.1 
Upgrade vm-memory to 0.2.1
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 vm-memory

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-13759, inspect your project dependencies for Vm memory:

inspect dependencies for vm-memory

Analyze the terminal output to locate any version of Vm memory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.1.1), 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-662: Improper Synchronization, where the product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes. In Vm memory, 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

rust-vmm vm-memory before 0.1.1 and 0.2.x before 0.2.1 allows attackers to cause a denial of service (loss of IP networking) because read_obj and write_obj do not properly access memory. This affects aarch64 (with musl or glibc) and x86_64 (with musl).

CVE-2020-13759 Affected Vm memory Versions

2 component(s)
Fixed Versions:
0.1.10.2.1
Product / Package Ecosystem Affected Versions Fixed Version
vm-memory
 crates.io
< 0.1.1
0.1.1
vm-memory
 crates.io
≥ 0.2.0
< 0.2.1
0.2.1

References

NVD — CVE-2020-13759 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-13759
Vm memory Source Repository REPOSITORY
https://github.com/rust-vmm/vm-memory/issues/93
Vm memory Source Repository REPOSITORY
https://github.com/rust-vmm/vm-memory
Vm memory Release RELEASE
https://github.com/rust-vmm/vm-memory/releases/tag/v0.1.1
Vm memory Release RELEASE
https://github.com/rust-vmm/vm-memory/releases/tag/v0.2.1
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2020-0157.html

Frequently Asked Questions

What is CVE-2020-13759?
CVE-2020-13759 is a security vulnerability in Vm memory involving Improper Synchronization and Race Condition in vm-memory under CWE-662: Improper Synchronization.
Which Vm memory versions are affected?
Affected versions include releases prior to 0.1.1, 0.2.1 across affected packages: vm-memory.
What version fixes CVE-2020-13759?
Upgrading to 0.1.1, 0.2.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is vm-memory affected?
Yes, vm-memory is affected in releases prior to 0.1.1, 0.2.1. Upgrade your dependency to 0.1.1, 0.2.1 or later.
What is the CVSS score of CVE-2020-13759?
CVE-2020-13759 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-2020-13759?
CVE-2020-13759 is classified under CWE-662: Improper Synchronization (The product utilizes multiple threads, processes, components, or systems to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes.).
How can I check crates.io dependencies for CVE-2020-13759?
Run the dependency tree command: 'inspect dependencies for vm-memory'. 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-mm4m-qg48-f7wc",
  "modified" : "2022-06-14T20:12:33Z",
  "published" : "2021-08-25T21:01:29Z",
  "aliases" : [ "CVE-2020-13759" ],
  "summary" : "Improper Synchronization and Race Condition in vm-memory",
  "details" : "rust-vmm vm-memory before 0.1.1 and 0.2.x before 0.2.1 allows attackers to cause a denial of service (loss of IP networking) because read_obj and write_obj do not properly access memory. This affects aarch64 (with musl or glibc) and x86_64 (with musl).",
  "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" : "crates.io",
      "name" : "vm-memory"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.1.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "vm-memory"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.2.0"
      }, {
        "fixed" : "0.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-13759"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rust-vmm/vm-memory/issues/93"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rust-vmm/vm-memory"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rust-vmm/vm-memory/releases/tag/v0.1.1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rust-vmm/vm-memory/releases/tag/v0.2.1"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2020-0157.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362", "CWE-662" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-07-26T20:45:48Z",
    "nvd_published_at" : "2020-06-02T19:15:00Z"
  }
}