Platform
cisco
Component
cisco-hyperflex-hx-data-platform
CVE-2021-1499 is a critical vulnerability affecting Cisco HyperFlex HX Data Platform, allowing unauthenticated attackers to upload arbitrary files. This poses a significant risk of code execution and potential system compromise. The vulnerability impacts versions prior to a fixed release (version not specified). Mitigation involves upgrading to a patched version or implementing temporary workarounds.
Successful exploitation of CVE-2021-1499 allows an attacker to upload files to the HyperFlex system without authentication. These files are uploaded with the permissions of the 'tomcat8' user, which could be leveraged to execute malicious code. This could lead to complete system compromise, data exfiltration, or denial of service. The attacker could potentially gain control of the entire HyperFlex cluster, impacting all virtual machines and data stored within it. The lack of authentication makes this vulnerability particularly concerning, as it requires minimal effort to exploit.
CVE-2021-1499 is currently not listed on the CISA KEV catalog. Public proof-of-concept exploits are not widely available, but the vulnerability's simplicity suggests a high probability of exploitation. The vulnerability was publicly disclosed on 2021-05-06. Active campaigns are not currently confirmed, but the ease of exploitation warrants close monitoring.
Exploit Status
EPSS
92.86% (100% percentile)
CVSS Vector
The primary mitigation for CVE-2021-1499 is to upgrade to a patched version of Cisco HyperFlex HX Data Platform. Cisco has not yet released a fixed version as of the last update. Until a patch is available, implement temporary workarounds such as configuring a Web Application Firewall (WAF) to block unauthorized file uploads. Specifically, create WAF rules to filter requests targeting the upload endpoint and restrict file types. Regularly monitor system logs for suspicious activity related to file uploads. After upgrade, confirm by attempting a file upload with an unauthenticated user and verifying that the upload is rejected.
Update Cisco HyperFlex HX Data Platform to a version that corrects the vulnerability. See the Cisco advisory for specific upgrade instructions.
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CVE-2021-1499 is a vulnerability in Cisco HyperFlex HX Data Platform allowing unauthenticated attackers to upload files, potentially leading to code execution. It's rated Medium severity (CVSS 5.3).
You are affected if you are running Cisco HyperFlex HX Data Platform prior to the release of a fixed version (currently unspecified).
Upgrade to a patched version of Cisco HyperFlex HX Data Platform when available. Until then, implement WAF rules to block unauthorized file uploads.
Active exploitation is not currently confirmed, but the vulnerability's simplicity suggests a high probability of exploitation. Monitor systems closely.
Refer to the Cisco Security Advisories page for the latest information: https://sec.cisco.com/ciscoSecurity/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-upload-20210506
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