CVE-2019-12739

Public Exploit

Description

lib/Controller/ExtractionController.php in the Extract add-on before 1.2.0 for Nextcloud allows Remote Code Execution via shell metacharacters in a RAR filename via ajax/extractRar.php (nameOfFile and directory parameters).

Category

9.0
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.48% Top 20%
Third-Party Advisory hackerone.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://hackerone.com/reports/546753 third party advisory exploit
https://www.secsignal.org/news/a-tale-of-rce-nextcloud-extract-app/

Frequently Asked Questions

What is the severity of CVE-2019-12739?
CVE-2019-12739 has been scored as a critical severity vulnerability.
How to fix CVE-2019-12739?
To fix CVE-2019-12739, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-12739 being actively exploited in the wild?
It is possible that CVE-2019-12739 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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