Headline
GHSA-833m-37f7-jq55: Rancher API Server Cross-site Scripting Vulnerability
Impact
A vulnerability has been identified in which unauthenticated cross-site scripting (XSS) in the API Server’s public API endpoint can be exploited. This can lead to an attacker exploiting the vulnerability to trigger JavaScript code and execute commands remotely.
The attack vector was identified as a Reflected XSS.
API Server propagates malicious payloads from user input to the UI, which renders the output. For example, a malicious URL gets rendered into a script that is executed on a page.
The changes addressed by this fix are:
- Encode input that comes from the request URL before adding it to the response.
- The request input is escaped by changing the URL construction that is used for links to use
url.URL. - The request input is escaped by escaping the JavaScript and CSS variables with attribute encoding as defined by OWASP.
Patches
Patched versions include the following commits:
| Branch | Commit |
|---|---|
| master | 4fd7d82 |
| release/v2.8 | 69b3c2b |
| release/v2.8.s3 | a3b9e37 |
| release/v2.7 | 4e102cf |
| release/v2.7.s3 | 97a10a3 |
| release/v2.6 | 4df268e |
Workarounds
There is no direct mitigation besides updating API Server to a patched version.
References
If you have any questions or comments about this advisory:
- Reach out to the SUSE Rancher Security team for security-related inquiries.
- Open an issue in the Rancher repository.
- Verify with our support matrix and product support lifecycle.
- GitHub Advisory Database
- GitHub Reviewed
- CVE-2023-32192
Rancher API Server Cross-site Scripting Vulnerability
High severity GitHub Reviewed Published Feb 8, 2024 in rancher/apiserver • Updated Feb 8, 2024
Package
gomod github.com/rancher/apiserver (Go)
Affected versions
< 0.0.0-20240207153957-4fd7d821d952
Patched versions
0.0.0-20240207153957-4fd7d821d952
Impact
A vulnerability has been identified in which unauthenticated cross-site scripting (XSS) in the API Server’s public API endpoint can be exploited. This can lead to an attacker exploiting the vulnerability to trigger JavaScript code and execute commands remotely.
The attack vector was identified as a Reflected XSS.
API Server propagates malicious payloads from user input to the UI, which renders the output. For example, a malicious URL gets rendered into a script that is executed on a page.
The changes addressed by this fix are:
- Encode input that comes from the request URL before adding it to the response.
- The request input is escaped by changing the URL construction that is used for links to use url.URL.
- The request input is escaped by escaping the JavaScript and CSS variables with attribute encoding as defined by OWASP.
Patches
Patched versions include the following commits:
Branch
Commit
master
4fd7d82
release/v2.8
69b3c2b
release/v2.8.s3
a3b9e37
release/v2.7
4e102cf
release/v2.7.s3
97a10a3
release/v2.6
4df268e
Workarounds
There is no direct mitigation besides updating API Server to a patched version.
References
If you have any questions or comments about this advisory:
- Reach out to the SUSE Rancher Security team for security-related inquiries.
- Open an issue in the Rancher repository.
- Verify with our support matrix and product support lifecycle.
References
- GHSA-833m-37f7-jq55
- rancher/apiserver@4df268e
- rancher/apiserver@4e102cf
- rancher/apiserver@4fd7d82
- rancher/apiserver@69b3c2b
- rancher/apiserver@97a10a3
- rancher/apiserver@a3b9e37
Published to the GitHub Advisory Database
Feb 8, 2024