Splunk Ent/UF Crash via Malformed ZIP File in File Monitoring Input
CVE-2022-37439 Published on August 16, 2022
Malformed ZIP file crashes Universal Forwarders and Splunk Enterprise through file monitoring input
In Splunk Enterprise and Universal Forwarder versions in the following table, indexing a specially crafted ZIP file using the file monitoring input can result in a crash of the application. Attempts to restart the application would result in a crash and would require manually removing the malformed file.
Vulnerability Analysis
CVE-2022-37439 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Data Amplification Vulnerability?
The software does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. An example of data amplification is a "decompression bomb," a small ZIP file that can produce a large amount of data when it is decompressed.
CVE-2022-37439 has been classified to as a Data Amplification vulnerability or weakness.
Products Associated with CVE-2022-37439
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Affected Versions
Splunk Enterprise:- Version 8.2 and below 8.2.7.1 is affected.
- Version 8.1 and below 8.1.11 is affected.
- Version 8.1.11 is affected.
- Version 8.2 and below 8.2.7.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.