CVE-2022-41956
Assigner: GitHub_M
Published: 2023-01-14T00:40:32.121Z
State: PUBLISHED
title: Autolab is vulnerable to file disclosure via remote handin feature
problemTypes: descriptions: cweId: CWE-22
description: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
type: CWE
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
version: 3.1
affected: vendor: autolab
product: Autolab
versions: version: <= 2.9.0
status: affected
descriptions: value: Autolab is a course management service, initially developed by a team of students at Carnegie Mellon University, that enables instructors to offer autograded programming assignments to their students over the Web. A file disclosure vulnerability was discovered in Autolab's remote handin feature, whereby users are able to hand-in assignments using paths outside their submission directory. Users can then view the submission to view the file's contents. The vulnerability has been patched in version 2.10.0. As a workaround, ensure that the field for the remote handin feature is empty (Edit Assessment > Advanced > Remote handin path), and that you are not running Autolab as `root` (or any user that has write access to `/`). Alternatively, disable the remote handin feature if it is unneeded by replacing the body of `local_submit` in `app/controllers/assessment/handin.rb` with `render(plain: "Feature disabled", status: :bad_request) && return`.
source: advisory: GHSA-g7x7-mgrv-f24x
discovery: UNKNOWN