CVE-2024-52308: Github.com/cli/cli/v2 Connecting To A Malicious Codespaces Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-p2h2-3vg9-4p87",
  "modified" : "2024-11-19T19:37:12Z",
  "published" : "2024-11-14T17:39:01Z",
  "aliases" : [ "CVE-2024-52308" ],
  "summary" : "Connecting to a malicious Codespaces via GH CLI could allow command execution on the user's computer",
  "details" : "### Summary\n\nA security vulnerability has been identified in GitHub CLI that could allow remote code execution (RCE) when users connect to a malicious Codespace SSH server and use the `gh codespace ssh` or `gh codespace logs` commands.\n\n### Details\n\nThe vulnerability stems from the way GitHub CLI handles SSH connection details when executing commands. When developers connect to remote Codespaces, they typically use a SSH server running within a devcontainer, often provided through the [default devcontainer image](https://docs.github.com/en/codespaces/setting-up-your-project-for-codespaces/adding-a-dev-container-configuration/introduction-to-dev-containers#using-the-default-dev-container-configuration).  GitHub CLI [retrieves SSH connection details](https://github.com/cli/cli/blob/30066b0042d0c5928d959e288144300cb28196c9/internal/codespaces/rpc/invoker.go#L230-L244), such as remote username, which is used in [executing `ssh` commands](https://github.com/cli/cli/blob/e356c69a6f0125cfaac782c35acf77314f18908d/pkg/cmd/codespace/ssh.go#L263) for `gh codespace ssh` or `gh codespace logs` commands.\n\nThis exploit occurs when a malicious third-party devcontainer contains a modified SSH server that injects `ssh` arguments within the SSH connection details. `gh codespace ssh` and `gh codespace logs` commands could execute arbitrary code on the user's workstation if the remote username contains something like `-oProxyCommand=\"echo hacked\" #`.  The `-oProxyCommand` flag causes `ssh` to execute the provided command while `#` shell comment causes any other `ssh` arguments to be ignored.\n\nIn `2.62.0`, the remote username information is being validated before being used.\n\n### Impact\n\nSuccessful exploitation could lead to arbitrary code execution on the user's workstation, potentially compromising the user's data and system.\n\n### Remediation and Mitigation\n\n1. Upgrade `gh` to `2.62.0`\n2. Exercise caution when using custom devcontainer images, prefer default or pre-built devcontainers from trusted sources.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/cli/cli/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.62.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.61.0"
    }
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/cli/cli"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.62.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/cli/cli/security/advisories/GHSA-p2h2-3vg9-4p87"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-52308"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/cli/cli"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2024-3269"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-11-14T17:39:01Z",
    "nvd_published_at" : "2024-11-14T23:15:05Z"
  }
}