CVE-2023-43620: Github.com/schollz/croc/v9 Croc Sender May Place ANSI Vulnerability

HIGH
Advisory Identifier: GHSA-364c-vvqx-446c
Share
CVSS 7.8
CWE-116
Published
Advisory Summary

CVE-2023-43620 is a HIGH (CVSS 7.8) croc sender may place ansi vulnerability (CWE-116: Improper Encoding or Escaping of Output) affecting Github.com/schollz/croc/v9 libraries in the Go ecosystem. The issue involves croc sender may place ansi or csi escape sequences in filename to attach receiver's terminal device. Remediation is available by upgrading affected packages to version 9.6.16.

CVE-2023-43620 at a Glance

CVE Identifier CVE-2023-43620
GHSA Identifier GHSA-364c-vvqx-446c
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-116: Improper Encoding or Escaping of Output
Affected Product Github.com/schollz/croc/v9
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.8

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:H/I:H/A:H).

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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2023-43620

To remediate this vulnerability, upgrade all affected Github.com/schollz/croc/v9 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/v9 fixed: 9.6.16 
Upgrade github.com/schollz/croc/v9 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/v9

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-43620, inspect your project dependencies for Github.com/schollz/croc/v9:

inspect dependencies for github.com/schollz/croc/v9

Analyze the terminal output to locate any version of Github.com/schollz/croc/v9 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-116: Improper Encoding or Escaping of Output, where the product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. as a result, the intended structure of the message is not preserved. In Github.com/schollz/croc/v9, 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 may place ANSI or CSI escape sequences in a filename to attack the terminal device of a receiver.

CVE-2023-43620 Affected Github.com/schollz/croc/v9 Versions

1 component(s)
Fixed Versions:
9.6.16
Product / Package Ecosystem Affected Versions Fixed Version
github.com/schollz/croc/v9
golang/github.com/schollz/croc/v9
Go
< 9.6.16
9.6.16

References

NVD — CVE-2023-43620 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-43620
Github.com/schollz/croc/v9 Source Repository REPOSITORY
https://github.com/schollz/croc/issues/595
Github.com/schollz/croc/v9 Source Repository REPOSITORY
https://github.com/schollz/croc/pull/697
Security Fix Commit FIX COMMIT
https://github.com/schollz/croc/commit/3f12f75fae2e844c555ec01eeba0b8474938e93a
Github.com/schollz/croc/v9 Source Repository REPOSITORY
https://github.com/schollz/croc
Github.com/schollz/croc/v9 Security Information SECURITY
https://www.openwall.com/lists/oss-security/2023/09/08/2
Github.com/schollz/croc/v9 Security Information SECURITY
http://www.openwall.com/lists/oss-security/2023/09/21/5

Frequently Asked Questions

What is CVE-2023-43620?
CVE-2023-43620 is a security vulnerability in Github.com/schollz/croc/v9 involving Croc sender may place ANSI or CSI escape sequences in filename to attach receiver's terminal device under CWE-116: Improper Encoding or Escaping of Output.
Which Github.com/schollz/croc/v9 versions are affected?
Affected versions include releases prior to 9.6.16 across affected packages: github.com/schollz/croc/v9.
What version fixes CVE-2023-43620?
Upgrading to 9.6.16 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/schollz/croc/v9 affected?
Yes, github.com/schollz/croc/v9 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-2023-43620?
CVE-2023-43620 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2023-43620?
CVE-2023-43620 is classified under CWE-116: Improper Encoding or Escaping of Output (The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.).
How can I check Go dependencies for CVE-2023-43620?
Run the dependency tree command: 'inspect dependencies for github.com/schollz/croc/v9'. 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-364c-vvqx-446c",
  "modified" : "2024-05-21T18:15:12Z",
  "published" : "2023-09-20T06:30:50Z",
  "aliases" : [ "CVE-2023-43620" ],
  "summary" : "Croc sender may place ANSI or CSI escape sequences in filename to attach receiver's terminal device",
  "details" : "An issue was discovered in Croc before 9.6.16. A sender may place ANSI or CSI escape sequences in a filename to attack the terminal device of a receiver. ",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/schollz/croc/v9"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "9.6.16"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-43620"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/schollz/croc/issues/595"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/schollz/croc/pull/697"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/schollz/croc/commit/3f12f75fae2e844c555ec01eeba0b8474938e93a"
  }, {
    "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-116" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-09-21T16:59:43Z",
    "nvd_published_at" : "2023-09-20T06:15:10Z"
  }
}