CVE-2021-212347.7HighCWE-22

CVE-2021-21234: Directory Traversal

lukashinsch · spring-boot-actuator-logview

Affected: lukashinsch spring-boot-actuator-logview · Exploitation: check available, not yet exploited

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

21.2%probability of exploitation in the next 30 days

97th percentile

050100

Higher than 97% of scored CVEs

7.7HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

spring-boot-actuator-logview in a library that adds a simple logfile viewer as spring boot actuator endpoint. It is maven package "eu.hinsch:spring-boot-actuator-logview". In spring-boot-actuator-logview before version 0.2.13 there is a directory traversal vulnerability. The nature of this library is to expose a log file directory via admin (spring boot actuator) HTTP endpoints. Both the filename to view and a base folder (relative to the logging folder root) can be specified via request parameters. While the filename parameter was checked to prevent directory traversal exploits (so that `filename=../somefile` would not work), the base folder parameter was not sufficiently checked, so that `filename=somefile&base=../` could access a file outside the logging base directory). The vulnerability has been patched in release 0.2.13. Any users of 0.2.12 should be able to update without any issues as there are no other changes in that release. There is no workaround to fix the vulnerability other than updating or removing the dependency. However, removing read access of the user the application is run with to any directory not required for running the application can limit the impact. Additionally, access to the logview endpoint can be limited by deploying the application behind a reverse proxy.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

lukashinsch · spring-boot-actuator-logview< 0.2.13

On the Atlas

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Open the Atlas

Exploitation: Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
CISA KEV: Not listed
Public check: Spring Boot Actuator Logview Directory Traversal · nuclei template in projectdiscovery/nuclei-templates
Weakness: Path Traversal · File and Path Handling
Published: January 2021
Band: Check available, not yet exploited, January 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-21234 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.