Logstash 1.4.2 Directory Traversal

Published
Credit
Risk
2015.06.10
Colin Coghill
Medium
CWE
CVE
Local
Remote
CWE-22
CVE-2015-4152
No
Yes

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.4/10
4.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
Partial

Summary:
Logstash versions 1.4.2 and prior are vulnerable to a directory traversal attack that allows an attacker to over-write files on the server running Logstash. This vulnerability is not present in the initial installation of Logstash. The vulnerability is exposed when the file output plugin is configured for use. The files impacted must be writeable by the user that owns the Logstash process.

We have been assigned CVE-2015-4152 for this issue.


Fixed versions:
Versions 1.5.0 and 1.4.3 have addressed the vulnerability.


Remediation:
Users that currently use the file output plugin or may use it in the future should upgrade to 1.5.0 or 1.4.3. This will address the vulnerability and preserve file output functionality.

Users that do not want to upgrade can address the vulnerability by disabling the file output plugin.


Credit:
Colin Coghill reported this issue.


CVSS
Overall CVSS score: 4.3


See this note in RAW Version

 
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