Upstream information

CVE-2024-52308 at MITRE

Description

The GitHub CLI version 2.6.1 and earlier are vulnerable to remote code execution through a malicious codespace SSH server when using `gh codespace ssh` or `gh codespace logs` commands. This has been patched in the cli v2.62.0.

Developers connect to remote codespaces through an SSH server running within the devcontainer, which is generally provided through the [default devcontainer image]( https://docs.github.com/en/codespaces/setting-up-your-project-for-codespaces/adding-a-dev-container-... 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/inv... 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#L2... https://github.com/cli/cli/blob/e356c69a6f0125cfaac782c35acf77314f18908d/pkg/cmd/codespace/ssh.go#L263 ) for `gh codespace ssh` or `gh codespace logs` commands.

This 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.

In `2.62.0`, the remote username information is being validated before being used.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having critical severity.

CVSS v3 Scores
  CNA (GitHub) National Vulnerability Database
Base Score 8 9.6
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector Network Network
Attack Complexity High Low
Privileges Required Low None
User Interaction Required Required
Scope Changed Changed
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1233387 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • gh >= 2.62.0-1.1
  • gh-bash-completion >= 2.62.0-1.1
  • gh-fish-completion >= 2.62.0-1.1
  • gh-zsh-completion >= 2.62.0-1.1
  • govulncheck-vulndb >= 0.0.20241119T173509-1.1
 Patchnames:
openSUSE-Tumbleweed-2024-14509
openSUSE-Tumbleweed-2024-14513

SUSE Timeline for this CVE

CVE page created: Fri Nov 15 02:00:32 2024
CVE page last modified: Fri Nov 29 15:02:27 2024