CVE-2023-43616: Github.com/schollz/croc Sender Can Cause A Receiver Vulnerability

MODERATE
Advisory Identifier: GHSA-8c8w-f7wp-2jr2
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CVSS 5.5
CWE-22
Published
Advisory Summary

CVE-2023-43616 is a MODERATE (CVSS 5.5) sender can cause a receiver vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Github.com/schollz/croc libraries in the Go ecosystem. The issue involves sender can cause a receiver to overwrite files during zip extraction in croc. Remediation is available by upgrading affected packages to version 9.6.16.

CVE-2023-43616 at a Glance

CVE Identifier CVE-2023-43616
GHSA Identifier GHSA-8c8w-f7wp-2jr2
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Github.com/schollz/croc
Package Ecosystem Go
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:N/UI:R/S:U/C:N/I:H/A:N).

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

How to Fix CVE-2023-43616

To remediate this vulnerability, upgrade all affected Github.com/schollz/croc 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/schollz/croc fixed: 9.6.16 
Upgrade github.com/schollz/croc to 9.6.16
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/schollz/croc

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-43616, inspect your project dependencies for Github.com/schollz/croc:

inspect dependencies for github.com/schollz/croc

Analyze the terminal output to locate any version of Github.com/schollz/croc in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.6.16), 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Github.com/schollz/croc, 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 Croc before 9.6.16. A sender can cause a receiver to overwrite files during ZIP extraction.

CVE-2023-43616 Affected Github.com/schollz/croc Versions

1 component(s)
Fixed Versions:
9.6.16
Product / Package Ecosystem Affected Versions Fixed Version
github.com/schollz/croc
golang/github.com/schollz/croc
Go
< 9.6.16
9.6.16

References

NVD — CVE-2023-43616 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-43616
Github.com/schollz/croc Source Repository REPOSITORY
https://github.com/schollz/croc/issues/594
Github.com/schollz/croc Source Repository REPOSITORY
https://github.com/schollz/croc/pull/698
Security Fix Commit FIX COMMIT
https://github.com/schollz/croc/commit/4929635eb875d2304e9415b8f4aa62af9e1a2339
Github.com/schollz/croc Source Repository REPOSITORY
https://github.com/schollz/croc
Github.com/schollz/croc Security Information SECURITY
https://www.openwall.com/lists/oss-security/2023/09/08/2
Github.com/schollz/croc Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/09/21/5

Frequently Asked Questions

What is CVE-2023-43616?
CVE-2023-43616 is a security vulnerability in Github.com/schollz/croc involving Sender can cause a receiver to overwrite files during ZIP extraction in Croc under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Github.com/schollz/croc versions are affected?
Affected versions include releases prior to 9.6.16 across affected packages: github.com/schollz/croc.
What version fixes CVE-2023-43616?
Upgrading to 9.6.16 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/schollz/croc affected?
Yes, github.com/schollz/croc is affected in releases prior to 9.6.16. Upgrade your dependency to 9.6.16 or later.
What is the CVSS score of CVE-2023-43616?
CVE-2023-43616 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2023-43616?
CVE-2023-43616 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Go dependencies for CVE-2023-43616?
Run the dependency tree command: 'inspect dependencies for github.com/schollz/croc'. 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-8c8w-f7wp-2jr2",
  "modified" : "2024-05-21T18:21:29Z",
  "published" : "2023-09-20T06:30:50Z",
  "aliases" : [ "CVE-2023-43616" ],
  "summary" : "Sender can cause a receiver to overwrite files during ZIP extraction in Croc",
  "details" : "An issue was discovered in Croc before 9.6.16. A sender can cause a receiver to overwrite files during ZIP extraction.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/schollz/croc"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "9.6.16"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-43616"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/schollz/croc/issues/594"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/schollz/croc/pull/698"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/schollz/croc/commit/4929635eb875d2304e9415b8f4aa62af9e1a2339"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/schollz/croc"
  }, {
    "type" : "WEB",
    "url" : "https://www.openwall.com/lists/oss-security/2023/09/08/2"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2023/09/21/5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-09-21T17:00:17Z",
    "nvd_published_at" : "2023-09-20T06:15:10Z"
  }
}