Github: Security Vulnerabilities
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.
CVSS Score
8.0
EPSS Score
0.008
Published
2024-11-14
An information disclosure vulnerability was identified in GitHub Enterprise Server via attacker uploaded asset URL allowing the attacker to retrieve metadata information of a user who clicks on the URL and further exploit it to create a convincing phishing page. This required the attacker to upload malicious SVG files and phish a victim user to click on that uploaded asset URL. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.14 and was fixed in versions 3.14.2, 3.13.5, 3.12.10, 3.11.16. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS Score
4.3
EPSS Score
0.001
Published
2024-10-11
An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed SAML SSO authentication to be bypassed resulting in unauthorized provisioning of users and access to the instance. Exploitation required the encrypted assertions feature to be enabled, and the attacker would require direct network access as well as a signed SAML response or metadata document. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.15 and was fixed in versions 3.11.16, 3.12.10, 3.13.5, and 3.14.2. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS Score
9.1
EPSS Score
0.389
Published
2024-10-10
A Cross-Site Scripting (XSS) vulnerability was identified in the repository transfer feature of GitHub Enterprise Server, which allows attackers to steal sensitive user information via social engineering. This vulnerability affected all versions of GitHub Enterprise Server and was fixed in version 3.10.17, 3.11.15, 3.12.9, 3.13.4, and 3.14.1. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS Score
6.1
EPSS Score
0.001
Published
2024-09-23
An improper privilege management vulnerability allowed arbitrary workflows to be committed using an improperly scoped PAT through the use of nested tags. This vulnerability affected all versions of GitHub Enterprise Server and was fixed in version 3.10.17, 3.11.15, 3.12.9, 3.13.4, and 3.14.1. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS Score
2.7
EPSS Score
0.001
Published
2024-09-23
actions/artifact is the GitHub ToolKit for developing GitHub Actions. Versions of `actions/artifact` on the 2.x branch before 2.1.2 are vulnerable to arbitrary file write when using `downloadArtifactInternal`, `downloadArtifactPublic`, or `streamExtractExternal` for extracting a specifically crafted artifact that contains path traversal filenames. Users are advised to upgrade to version 2.1.2 or higher. There are no known workarounds for this issue.
CVSS Score
7.3
EPSS Score
0.011
Published
2024-09-02
An Incorrect Authorization vulnerability was identified in GitHub Enterprise Server, allowing an attacker to update the title, assignees, and labels of any issue inside a public repository. This was only exploitable inside a public repository. This vulnerability affected GitHub Enterprise Server versions before 3.14 and was fixed in versions 3.13.3, 3.12.8, and 3.11.14. Versions 3.10 of GitHub Enterprise Server are not affected. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS Score
4.3
EPSS Score
0.001
Published
2024-08-20
An Incorrect Authorization vulnerability was identified in GitHub Enterprise Server that allowed a GitHub App with only content: read and pull_request_write: write permissions to read issue content inside a private repository. This was only exploitable via user access token and installation access token was not impacted. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.14 and was fixed in versions 3.13.3, 3.12.8, 3.11.14 and 3.10.16. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS Score
6.5
EPSS Score
0.001
Published
2024-08-20
An XML signature wrapping vulnerability was present in GitHub Enterprise Server (GHES) when using SAML authentication with specific identity providers utilizing publicly exposed signed federation metadata XML. This vulnerability allowed an attacker with direct network access to GitHub Enterprise Server to forge a SAML response to provision and/or gain access to a user with site administrator privileges. Exploitation of this vulnerability would allow unauthorized access to the instance without requiring prior authentication. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.14 and was fixed in versions 3.13.3, 3.12.8, 3.11.14, and 3.10.16. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS Score
9.8
EPSS Score
0.005
Published
2024-08-20
An exposure of sensitive information vulnerability in GitHub Enterprise Server would allow an attacker to enumerate the names of private repositories that utilize deploy keys. This vulnerability did not allow unauthorized access to any repository content besides the name. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.14 and was fixed in versions 3.13.1, 3.12.6, 3.11.12, 3.10.14, and 3.9.17. This vulnerability was reported via the GitHub Bug Bounty program.
CVSS Score
5.3
EPSS Score
0.002
Published
2024-07-16
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