Splunk Enterprise/Universal Forwarders up to 8.1.10/8.2.7 ZIP File data amplification

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Splunk Enterprise and Universal Forwarders up to 8.1.10/8.2.7. This vulnerability affects unknown code of the component ZIP File Handler. The manipulation leads to data amplification. This vulnerability is uniquely identified as CVE-2022-37439. Local access is required to approach this attack. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Splunk Enterprise and Universal Forwarders up to 8.1.10/8.2.7 (Log Management Software) and classified as problematic. This issue affects an unknown functionality of the component ZIP File Handler. The manipulation with an unknown input leads to a data amplification vulnerability. Using CWE to declare the problem leads to CWE-409. The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. Impacted is availability. The summary by CVE is:

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.

The weakness was disclosed 08/17/2022. It is possible to read the advisory at research.splunk.com. The identification of this vulnerability is CVE-2022-37439 since 08/05/2022. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 8.1.11, 8.2.7.1 or 9.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.5
CNA Vector (Splunk Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Data amplification
CWE: CWE-409 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Enterprise/Universal Forwarders 8.1.11/8.2.7.1/9.0

Timelineinfo

08/05/2022 🔍
08/17/2022 +12 days 🔍
08/17/2022 +0 days 🔍
08/17/2022 +0 days 🔍

Sourcesinfo

Advisory: research.splunk.com
Status: Confirmed

CVE: CVE-2022-37439 (🔍)
GCVE (CVE): GCVE-0-2022-37439
GCVE (VulDB): GCVE-100-206627

Entryinfo

Created: 08/17/2022 10:55
Changes: 08/17/2022 10:55 (51)
Complete: 🔍
Cache ID: 216::103

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