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Dropbear SSH 'CVE-2017-9078' Post-authentication root RCE Vulnerability

Information

Severity

Severity

Critical

Family

Family

General

CVSSv2 Base

CVSSv2 Base

9.3

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

5 years ago

Summary

This host is installed with Dropbear SSH and is prone to a post-authentication root remote code execution vulnerability.

Insight

Insight

The flaw exists because of a double free in cleanup of TCP listeners when the -a option is enabled.

Affected Software

Affected Software

Dropbear SSH versions 2013.56 to 2016.74

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Upgrade to Dropbear SSH version 2017.75 or later.

Common Vulnerabilities and Exposures (CVE)