Description

loklak is an open-source server application which is able to collect messages from various sources, including twitter. The server contains a search index and a peer-to-peer index sharing interface. All messages are stored in an elasticsearch index. In loklak less than or equal to commit 5f48476, a path traversal vulnerability exists. Insufficient input validation in the APIs exposed by the loklak server allowed a directory traversal vulnerability. Any admin configuration and files readable by the app available on the hosted file system can be retrieved by the attacker. Furthermore, user-controlled content could be written to any admin config and files readable by the application. This has been patched in commit 50dd692. Users will need to upgrade their hosted instances of loklak to not be vulnerable to this exploit.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

CNA:  GitHub, Inc.

Base Score:  9.1 CRITICAL

Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score:  6.4 MEDIUM

Vector:  (AV:N/AC:L/Au:N/C:P/I:P/A:N)

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/loklak/loklak_server/commit/50dd69230d3cd71dab0bfa7156682ffeca8ed8b9	Patch  Third Party Advisory
https://github.com/loklak/loklak_server/security/advisories/GHSA-7557-4v29-rqw6	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-22	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')	GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Initial Analysis by NIST 2/08/2021 9:19:02 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:a:loklak_project:loklak:*:*:*:*:*:*:*:* versions up to (including) 2020-01-22
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Changed	Reference Type	https://github.com/loklak/loklak_server/commit/50dd69230d3cd71dab0bfa7156682ffeca8ed8b9 No Types Assigned	https://github.com/loklak/loklak_server/commit/50dd69230d3cd71dab0bfa7156682ffeca8ed8b9 Patch, Third Party Advisory
Changed	Reference Type	https://github.com/loklak/loklak_server/security/advisories/GHSA-7557-4v29-rqw6 No Types Assigned	https://github.com/loklak/loklak_server/security/advisories/GHSA-7557-4v29-rqw6 Third Party Advisory