CVE-2023-40584: Github.com/argoproj/argo cd/v2 Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-g687-f2gx-6wm8
CVSS 6.5
CWE-400
Published
Advisory Summary

CVE-2023-40584 is a MODERATE (CVSS 6.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Github.com/argoproj/argo cd/v2 libraries in the Go ecosystem. The issue involves argo cd repo-server denial of service vulnerability. Remediation is available by upgrading affected packages to version 2.6.15, 2.7.14, 2.8.3.

CVE-2023-40584 at a Glance

CVE Identifier CVE-2023-40584
GHSA Identifier GHSA-g687-f2gx-6wm8
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Github.com/argoproj/argo cd/v2
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2023-40584

To remediate this vulnerability, upgrade all affected Github.com/argoproj/argo cd/v2 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/argoproj/argo-cd/v2 fixed: 2.6.15
Upgrade github.com/argoproj/argo-cd/v2 to 2.6.15
github.com/argoproj/argo-cd/v2 fixed: 2.7.14
Upgrade github.com/argoproj/argo-cd/v2 to 2.7.14
github.com/argoproj/argo-cd/v2 fixed: 2.8.3
Upgrade github.com/argoproj/argo-cd/v2 to 2.8.3
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/argoproj/argo-cd/v2

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-40584, inspect your project dependencies for Github.com/argoproj/argo cd/v2:

inspect dependencies for github.com/argoproj/argo-cd/v2

Analyze the terminal output to locate any version of Github.com/argoproj/argo cd/v2 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.6.15), 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Github.com/argoproj/argo cd/v2, 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

### Impact All versions of ArgoCD starting from v2.4 have a bug where the ArgoCD repo-server component is vulnerable to a Denial-of-Service attack vector. Specifically, the said component extracts a user-controlled tar.gz file without validating the size of its inner files. As a result, a malicious, low-privileged user can send a malicious tar.gz file that exploits this vulnerability to the repo-server, thereby harming the system's functionality and availability. Additionally, the repo-server is susceptible to another vulnerability due to the fact that it does not check the extracted file permissions before attempting to delete them. Consequently, an attacker can craft a malicious tar.gz archive in a way that prevents the deletion of its inner files when the manifest generation process is completed. ### Patches A patch for this vulnerability has been released in the following Argo CD versions: * v2.6.15 * v2.7.14 * v2.8.3 ### Workarounds The only way to completely resolve the issue is to upgrade. #### Mitigations Configure RBAC (Role-Based Access Control) and provide access for configuring applications only to a limited number of administrators. These administrators should utilize trusted and verified Helm charts. ### For more information If you have any questions or comments about this advisory: * Open an issue in [the Argo CD issue tracker](https://github.com/argoproj/argo-cd/issues) or [discussions](https://github.com/argoproj/argo-cd/discussions) * Join us on [Slack](https://argoproj.github.io/community/join-slack) in channel #argo-cd ### Credits This vulnerability was found & reported by GE Vernova – Amit Laish. The Argo team would like to thank these contributors for their responsible disclosure and constructive communications during the resolve of this issue

CVE-2023-40584 Affected Github.com/argoproj/argo cd/v2 Versions

3 component(s)
Fixed Versions:
2.6.152.7.142.8.3
Product / Package Ecosystem Affected Versions Fixed Version
github.com/argoproj/argo-cd/v2
Go
≥ 2.4.0
< 2.6.15
2.6.15
github.com/argoproj/argo-cd/v2
Go
≥ 2.7.0
< 2.7.14
2.7.14
github.com/argoproj/argo-cd/v2
Go
≥ 2.8.0
< 2.8.3
2.8.3

References

Frequently Asked Questions

What is CVE-2023-40584?
CVE-2023-40584 is a security vulnerability in Github.com/argoproj/argo cd/v2 involving Argo CD repo-server Denial of Service vulnerability under CWE-400: Uncontrolled Resource Consumption.
Which Github.com/argoproj/argo cd/v2 versions are affected?
Affected versions include releases prior to 2.6.15, 2.7.14, 2.8.3 across affected packages: github.com/argoproj/argo-cd/v2.
What version fixes CVE-2023-40584?
Upgrading to 2.6.15, 2.7.14, 2.8.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/argoproj/argo-cd/v2 affected?
Yes, github.com/argoproj/argo-cd/v2 is affected in releases prior to 2.6.15, 2.7.14, 2.8.3. Upgrade your dependency to 2.6.15, 2.7.14, 2.8.3 or later.
What is the CVSS score of CVE-2023-40584?
CVE-2023-40584 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2023-40584?
CVE-2023-40584 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Go dependencies for CVE-2023-40584?
Run the dependency tree command: 'inspect dependencies for github.com/argoproj/argo-cd/v2'. 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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g687-f2gx-6wm8",
  "modified" : "2023-09-11T12:59:48Z",
  "published" : "2023-09-11T12:59:48Z",
  "aliases" : [ "CVE-2023-40584" ],
  "summary" : "Argo CD repo-server  Denial of Service vulnerability",
  "details" : "### Impact\nAll versions of ArgoCD starting from v2.4 have a bug where the ArgoCD repo-server component is vulnerable to a Denial-of-Service attack vector. Specifically, the said component extracts a user-controlled tar.gz file without validating the size of its inner files. As a result, a malicious, low-privileged user can send a malicious tar.gz file that exploits this vulnerability to the repo-server, thereby harming the system's functionality and availability. Additionally, the repo-server is susceptible to another vulnerability due to the fact that it does not check the extracted file permissions before attempting to delete them. Consequently, an attacker can craft a malicious tar.gz archive in a way that prevents the deletion of its inner files when the manifest generation process is completed.\n\n\n### Patches\nA patch for this vulnerability has been released in the following Argo CD versions:\n\n* v2.6.15\n* v2.7.14\n* v2.8.3\n\n### Workarounds\nThe only way to completely resolve the issue is to upgrade.\n\n#### Mitigations\nConfigure RBAC (Role-Based Access Control) and provide access for configuring applications only to a limited number of administrators. These administrators should utilize trusted and verified Helm charts.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [the Argo CD issue tracker](https://github.com/argoproj/argo-cd/issues) or [discussions](https://github.com/argoproj/argo-cd/discussions)\n* Join us on [Slack](https://argoproj.github.io/community/join-slack) in channel #argo-cd\n\n### Credits\nThis vulnerability was found & reported by GE Vernova – Amit Laish.\n\nThe Argo team would like to thank these contributors for their responsible disclosure and constructive communications during the resolve of this issue\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/argoproj/argo-cd/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.4.0"
      }, {
        "fixed" : "2.6.15"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/argoproj/argo-cd/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.7.0"
      }, {
        "fixed" : "2.7.14"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/argoproj/argo-cd/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.8.0"
      }, {
        "fixed" : "2.8.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/argoproj/argo-cd/security/advisories/GHSA-g687-f2gx-6wm8"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-40584"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/argoproj/argo-cd/commit/1391ba72149655e4884d357586d3201f15bc92dc"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/argoproj/argo-cd/commit/b8f92c4ff226346624f43de3f25d81dac6386674"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/argoproj/argo-cd"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/argoproj/argo-cd/releases/tag/v2.6.15"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/argoproj/argo-cd/releases/tag/v2.7.14"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/argoproj/argo-cd/releases/tag/v2.8.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-09-11T12:59:48Z",
    "nvd_published_at" : "2023-09-07T23:15:10Z"
  }
}