CVE-2020-15239 Detail

Current Description

In xmpp-http-upload before version 0.4.0, when the GET method is attacked, attackers can read files which have a `.data` suffix and which are accompanied by a JSON file with the `.meta` suffix. This can lead to Information Disclosure and in some shared-hosting scenarios also to circumvention of authentication or other limitations on the outbound (GET) traffic. For example, in a scenario where a single server has multiple instances of the application running (with separate DATA_ROOT settings), an attacker who has knowledge about the directory structure is able to read files from any other instance to which the process has read access. If instances have individual authentication (for example, HTTP authentication via a reverse proxy, source IP based filtering) or other restrictions (such as quotas), attackers may circumvent those limits in such a scenario by using the Directory Traversal to retrieve data from the other instances. If the associated XMPP server (or anyone knowing the SECRET_KEY) is malicious, they can write files outside the DATA_ROOT. The files which are written are constrained to have the `.meta` and the `.data` suffixes; the `.meta` file will contain the JSON with the Content-Type of the original request and the `.data` file will contain the payload. The issue is patched in version 0.4.0.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score matches with CNA score
CNA:  GitHub, Inc.
Base Score:  3.5 LOW
Vector:  CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N


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References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/horazont/xmpp-http-upload/commit/82056540191e89f0cd697c81f57714c00962ed75 Patch  Third Party Advisory 
https://github.com/horazont/xmpp-http-upload/pull/12 Third Party Advisory 
https://github.com/horazont/xmpp-http-upload/security/advisories/GHSA-hwv5-w8gm-fq9f Third Party Advisory 
https://pypi.org/project/xmpp-http-upload/#history Release Notes  Third Party Advisory 

Weakness Enumeration

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

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Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-15239
NVD Published Date:
10/06/2020
NVD Last Modified:
10/22/2020
Source:
GitHub, Inc.