"Critical Code Execution Vulnerability Patched in Splunk Enterprise"

Splunk recently announced the release of out-of-band patches that address multiple vulnerabilities across Splunk Enterprise, including a critical issue that could lead to arbitrary code execution.  Splunk uses Splunk Enterprise deployment servers to distribute configurations and content updates to various Enterprise instances, including forwarders, indexers, and search heads.  Tracked as CVE-2022-32158 (CVSS score of 9.0), the newly addressed critical-severity vulnerability exists because Splunk Enterprise deployment servers prior to version 9.0 allow clients to leverage the server to deploy forwarder bundles to other clients.  Due to this issue, an attacker could compromise a Universal Forwarder endpoint and then abuse it to execute arbitrary code on other endpoints connected to the deployment server.  Splunk has resolved the issue by releasing Enterprise deployment server version 9.0 and encourages customers to update their instances to this version or higher.  This week, the company also announced that it has resolved multiple high-severity bugs in Splunk Enterprise, including one where deployment servers in versions before 9.0 allow for forwarder bundles to be downloaded without authentication (CVE-2022-32157).  The researchers stated that to resolve this issue, customers need to update their deployment servers to version 9.0 and then configure authentication for deployment servers and clients, which ensures that only universal forwarder versions 9.0 and later can be managed.  The researchers noted that although the vulnerability does not directly affect Universal Forwarders, remediation requires updating all Universal Forwarders that the deployment server manages to version 9.0 or higher prior to enabling the remediation.  Splunk noted that these vulnerabilities do not impact the Splunk Cloud Platform (SCP) because it does not offer or use deployment servers.  Splunk has also resolved multiple TLS certificate validation issues, which could result in machine-in-the-middle attacks or could allow for connections from peers or nodes without valid certificates to not fail by default.  Splunk stated that customers should upgrade to Splunk Enterprise version 9.0 or higher to resolve all of these flaws.  Splunk says it has no evidence of these vulnerabilities being exploited in attacks.
 

SecurityWeek reports: "Critical Code Execution Vulnerability Patched in Splunk Enterprise"