CVE-2020-26233
3.6 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:H/Au:S/C:P/I:P/A:N
7.3 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
0.001 Low
EPSS
Percentile
44.7%
Git Credential Manager Core (GCM Core) is a secure Git credential helper built on .NET Core that runs on Windows and macOS. In Git Credential Manager Core before version 2.0.289, when recursively cloning a Git repository on Windows with submodules, Git will first clone the top-level repository and then recursively clone all submodules by starting new Git processes from the top-level working directory. If a malicious git.exe executable is present in the top-level repository then this binary will be started by Git Credential Manager Core when attempting to read configuration, and not git.exe as found on the %PATH%. This only affects GCM Core on Windows, not macOS or Linux-based distributions. GCM Core version 2.0.289 contains the fix for this vulnerability, and is available from the project’s GitHub releases page. GCM Core 2.0.289 is also bundled in the latest Git for Windows release; version 2.29.2(3). As a workaround, users should avoid recursively cloning untrusted repositories with the --recurse-submodules option.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| microsoft | git_credential_manager_core | * | cpe:2.3:a:microsoft:git_credential_manager_core:*:*:*:*:*:*:*:* |
CNA Affected
[
{
"product": "Git-Credential-Manager-Core",
"vendor": "microsoft",
"versions": [
{
"status": "affected",
"version": "<= 2.0.280"
}
]
}
]References
blog.blazeinfosec.com/attack-of-the-clones-2-git-command-client-remote-code-execution-strikes-back/
git-scm.com/docs/git-clone#Documentation/git-clone.txt---recurse-submodulesltpathspecgt
github.com/microsoft/Git-Credential-Manager-Core/commit/61c0388e064babb3b4e60d3ec269e8a07ab3bc76
github.com/microsoft/Git-Credential-Manager-Core/releases/tag/v2.0.289-beta
github.com/microsoft/Git-Credential-Manager-Core/security/advisories/GHSA-2gq7-ww4j-3m76
Social References
More
Related
3.6 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
HIGH
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:H/Au:S/C:P/I:P/A:N
7.3 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
0.001 Low
EPSS
Percentile
44.7%