QID 981436
QID 981436: Python (pip) Security Update for binderhub (GHSA-9jjr-qqfp-ppwx)
Security update has been released for binderhub to fix the vulnerability.
Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.
A remote code execution vulnerability has been identified in BinderHub, where providing BinderHub with maliciously crafted input could execute code in the BinderHub context, with the potential to egress credentials of the BinderHub deployment, including JupyterHub API tokens, kubernetes service accounts, and docker registry credentials. This may provide the ability to manipulate images and other user created pods in the deployment, with the potential to escalate to the host depending on the underlying kubernetes configuration.
```diff
From 9f4043d9dddc1174920e687773f27b7933f48ab6 Mon Sep 17 00:00:00 2001
From: Riccardo Castellotti <[email protected]>
Date: Thu, 19 Aug 2021 15:49:43 +0200
Subject: [PATCH] Explicitly separate git-ls-remote options from positional
arguments
---
binderhub/repoproviders.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/binderhub/repoproviders.py b/binderhub/repoproviders.py
index f33347b..5d4b87c 100755
--- a/binderhub/repoproviders.py
+++ b/binderhub/repoproviders.py
@@ -484,7 +484,7 @@ class GitRepoProvider(RepoProvider):
self.sha1_validate(self.unresolved_ref)
except ValueError:
# The ref is a head/tag and we resolve it using `git ls-remote`
- command = ["git", "ls-remote", self.repo, self.unresolved_ref]
+ command = ["git", "ls-remote", "--", self.repo, self.unresolved_ref]
result = subprocess.run(command, universal_newlines=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
if result.returncode:
raise RuntimeError("Unable to run git ls-remote to get the `resolved_ref`: {}".format(result.stderr))
--
2.25.1
```Workaround:
Disable the git repo provider by specifying the `BinderHub.repo_providers` config, e.g.:
```python
from binderhub.repoproviders import (GitHubRepoProvider,
GitLabRepoProvider, GistRepoProvider,
ZenodoProvider, FigshareProvider, HydroshareProvider,
DataverseProvider)
c.BinderHub.repo_providers = {
'gh': GitHubRepoProvider,
'gist': GistRepoProvider,
'gl': GitLabRepoProvider,
'zenodo': ZenodoProvider,
'figshare': FigshareProvider,
'hydroshare': HydroshareProvider,
'dataverse': DataverseProvider,
}
```
- GHSA-9jjr-qqfp-ppwx -
github.com/advisories/GHSA-9jjr-qqfp-ppwx
CVEs related to QID 981436
| Advisory ID | Software | Component | Link |
|---|---|---|---|
| GHSA-9jjr-qqfp-ppwx | binderhub |
github.com/advisories/GHSA-9jjr-qqfp-ppwx |