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Splunk Patches High-Severity Flaws in Enterprise, IT Service Intelligence

Splunk has released patches for multiple high-severity vulnerabilities impacting Splunk Enterprise and IT Service Intelligence.

Splunk on Wednesday announced patches for multiple high-severity vulnerabilities in Splunk Enterprise and IT Service Intelligence, including flaws in third-party packages.

The most severe of the bugs resolved in Splunk Enterprise this month is CVE-2023-40595 (CVSS score of 8.8), which is described as a remote code execution issue exploitable using crafted queries.

“The exploit requires the use of the collect SPL command which writes a file within the Splunk Enterprise installation. The attacker can then use this file to submit a serialized payload that can result in execution of code within the payload,” Splunk explains in an advisory.

Next in line is CVE-2023-40598, a command injection vulnerability impacting a legacy internal function, which could be exploited to execute arbitrary code.

“The vulnerability revolves around the currently-deprecated runshellscript command that scripted alert actions use. This command, along with external command lookups, lets an attacker use this vulnerability to inject and execute commands within a privileged context from the Splunk platform instance,” Splunk explains.

The latest Splunk Enterprise releases also resolve a cross-site scripting (XSS) flaw (CVE-2023-40592), an absolute path traversal bug leading to code execution (CVE-2023-40597), and a privilege escalation issue resulting from an insecure path reference in a DLL (CVE-2023-40596).

All vulnerabilities were addressed with the release of Splunk Enterprise versions 8.2.12, 9.0.6, and 9.1.1, which also patch two medium-severity denial-of-service (DoS) flaws.

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On Wednesday, Splunk also announced patches for an unauthenticated log injection bug (CVE-2023-4571, CVSS score of 8.6) in IT Service Intelligence.

The issue allows an attacker to inject ANSI escape codes into log files, resulting in malicious code being executed when the log file is read in a vulnerable terminal application.

While IT Service Intelligence is not directly impacted by the flaw, indirect impact results from the permissions the terminal application has, and from where and how the user reads the malicious log files.

Splunk patched the vulnerability in IT Service Intelligence versions 4.13.3 and 4.15.3.

The software company makes no mention of any of these vulnerabilities being exploited in attacks. Additional information on the bugs can be found on Splunk’s security advisories page.

The updates Splunk announced on Wednesday also resolve multiple high-severity issues in third-party packages used in Splunk Enterprise, IT Service Intelligence, and Universal Forwarder.

Related: High-Severity Vulnerabilities Patched in Splunk Enterprise

Related: Splunk Enterprise Updates Patch High-Severity Vulnerabilities

Related: Splunk Patches 9 High-Severity Vulnerabilities in Enterprise Product

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

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