CVE-2023-32317
A Tar slip vulnerability was found in the MOSS cheat checker functionality of Autolab.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Autolab is a course management service that enables auto-graded programming assignments. A Tar slip vulnerability was found in the MOSS cheat checker functionality of Autolab. To exploit this vulnerability an authenticated attacker with instructor permissions needs to upload a specially crafted Tar file. Both "Base File Tar" and "Additional file archive" can be fed with Tar files that contain paths outside their target directories (e.g., `../../../../tmp/tarslipped2.sh`). When the MOSS cheat checker is started the files inside of the archives are expanded to the attacker-chosen locations. This issue may lead to arbitrary file write within the scope of the running process. This issue has been addressed in version 2.11.0. Users are advised to upgrade.
- CVSS 3.1
- 7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.89% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- autolabproject/autolab
- Source
- security-advisories@github.com
References
- https://github.com/autolab/Autolab/commit/410a9228ee265f80692334d75eb2c3b4dac6f9e5Patch
- https://github.com/autolab/Autolab/security/advisories/GHSA-h8g5-vhm4-wx6gVendor Advisory
- https://securitylab.github.com/advisories/GHSL-2023-081_GHSL-2023-082_Autolab/
- https://github.com/autolab/Autolab/commit/410a9228ee265f80692334d75eb2c3b4dac6f9e5Patch
- https://github.com/autolab/Autolab/security/advisories/GHSA-h8g5-vhm4-wx6gVendor Advisory
- https://securitylab.github.com/advisories/GHSL-2023-081_GHSL-2023-082_Autolab/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.