CVE-2023-49391: Github.com/free5gc/amf Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-jcrr-rr6w-8c83
Share
CVSS 7.5
CWE-94
Published
Advisory Summary

CVE-2023-49391 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Github.com/free5gc/amf libraries in the Go ecosystem. The issue involves free5gc amf denial of service vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2023-49391 at a Glance

CVE Identifier CVE-2023-49391
GHSA Identifier GHSA-jcrr-rr6w-8c83
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Github.com/free5gc/amf
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-2023-49391

To remediate this vulnerability, upgrade all affected Github.com/free5gc/amf 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/free5gc/amf fixed: Latest secure release 
Upgrade github.com/free5gc/amf to Latest secure release
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/free5gc/amf

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-49391, inspect your project dependencies for Github.com/free5gc/amf:

inspect dependencies for github.com/free5gc/amf

Analyze the terminal output to locate any version of Github.com/free5gc/amf 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: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Github.com/free5gc/amf, 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 free5GC version 3.3.0, allows remote attackers to execute arbitrary code and cause a denial of service (DoS) on AMF component via crafted NGAP message.

CVE-2023-49391 Affected Github.com/free5gc/amf Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
github.com/free5gc/amf
golang/github.com/free5gc/amf
Go
≤ 1.2.0

References

NVD — CVE-2023-49391 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-49391
Github.com/free5gc/amf Source Repository REPOSITORY
https://github.com/free5gc/free5gc/issues/497
Security Fix Commit FIX COMMIT
https://github.com/free5gc/amf/commit/6fc612c35997cf4e8be1e5c86ae2242f04b576a9
Github.com/free5gc/amf Source Repository REPOSITORY
https://github.com/free5gc/amf

Frequently Asked Questions

What is CVE-2023-49391?
CVE-2023-49391 is a security vulnerability in Github.com/free5gc/amf involving free5GC AMF denial of service vulnerability under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Github.com/free5gc/amf versions are affected?
Affected versions include releases prior to current release patches across affected packages: github.com/free5gc/amf.
What version fixes CVE-2023-49391?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/free5gc/amf affected?
Yes, github.com/free5gc/amf is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2023-49391?
CVE-2023-49391 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-2023-49391?
CVE-2023-49391 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Go dependencies for CVE-2023-49391?
Run the dependency tree command: 'inspect dependencies for github.com/free5gc/amf'. 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-jcrr-rr6w-8c83",
  "modified" : "2024-09-12T21:32:39Z",
  "published" : "2023-12-22T12:31:52Z",
  "aliases" : [ "CVE-2023-49391" ],
  "summary" : "free5GC AMF denial of service vulnerability",
  "details" : "An issue was discovered in free5GC version 3.3.0, allows remote attackers to execute arbitrary code and cause a denial of service (DoS) on AMF component via crafted NGAP message.",
  "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/free5gc/amf"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-49391"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/free5gc/free5gc/issues/497"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/free5gc/amf/commit/6fc612c35997cf4e8be1e5c86ae2242f04b576a9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/free5gc/amf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-12-22T19:51:38Z",
    "nvd_published_at" : "2023-12-22T11:15:07Z"
  }
}