CVE-2023-47345: Github.com/free5gc/free5gc Free5gc Buffer Overflow Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-6944-6pmv-6mp2
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CVSS 7.5
CWE-120
Published
Advisory Summary

CVE-2023-47345 is a HIGH (CVSS 7.5) free5gc buffer overflow vulnerability vulnerability (CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')) affecting Github.com/free5gc/free5gc libraries in the Go ecosystem. The issue involves free5gc buffer overflow vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2023-47345 at a Glance

CVE Identifier CVE-2023-47345
GHSA Identifier GHSA-6944-6pmv-6mp2
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Product Github.com/free5gc/free5gc
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-2023-47345

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

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-47345, inspect your project dependencies for Github.com/free5gc/free5gc:

inspect dependencies for github.com/free5gc/free5gc

Analyze the terminal output to locate any version of Github.com/free5gc/free5gc 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-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), where the product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. In Github.com/free5gc/free5gc, 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

Buffer Overflow vulnerability in free5gc 3.3.0 allows attackers to cause a denial of service via crafted PFCP message with malformed PFCP Heartbeat message whose Recovery Time Stamp IE length is mutated to zero.

CVE-2023-47345 Affected Github.com/free5gc/free5gc Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
github.com/free5gc/free5gc
golang/github.com/free5gc/free5gc
Go
≤ 3.3.0

References

NVD — CVE-2023-47345 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-47345
Github.com/free5gc/free5gc Source Repository REPOSITORY
https://github.com/free5gc/free5gc/issues/483
Github.com/free5gc/free5gc Source Repository REPOSITORY
https://github.com/free5gc/free5gc

Frequently Asked Questions

What is CVE-2023-47345?
CVE-2023-47345 is a security vulnerability in Github.com/free5gc/free5gc involving free5gc Buffer Overflow vulnerability under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow').
Which Github.com/free5gc/free5gc versions are affected?
Affected versions include releases prior to current release patches across affected packages: github.com/free5gc/free5gc.
What version fixes CVE-2023-47345?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/free5gc/free5gc affected?
Yes, github.com/free5gc/free5gc 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-2023-47345?
CVE-2023-47345 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-2023-47345?
CVE-2023-47345 is classified under CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.).
How can I check Go dependencies for CVE-2023-47345?
Run the dependency tree command: 'inspect dependencies for github.com/free5gc/free5gc'. 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-6944-6pmv-6mp2",
  "modified" : "2023-11-21T19:40:09Z",
  "published" : "2023-11-16T00:30:55Z",
  "aliases" : [ "CVE-2023-47345" ],
  "summary" : "free5gc Buffer Overflow vulnerability",
  "details" : "Buffer Overflow vulnerability in free5gc 3.3.0 allows attackers to cause a denial of service via crafted PFCP message with malformed PFCP Heartbeat message whose Recovery Time Stamp IE length is mutated to zero.",
  "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/free5gc"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "3.3.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-47345"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/free5gc/free5gc/issues/483"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/free5gc/free5gc"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-120" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-16T21:01:33Z",
    "nvd_published_at" : "2023-11-15T22:15:27Z"
  }
}