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CVE-2023-32317

Autolab tar slip in cheat checker functionality (`GHSL-2023-082`)

HIGH
7.2
CVSS Score
Published: May 26, 2023 at 10:42 PM UTC
Updated: June 17, 2026 at 05:58 AM UTC
2 products affected across 2 vendorsAutolabAutolab

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Severity
HIGH7.2
Exploit prediction
EPSS 0.9%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Autolab· Autolabproject
95%
v < 2.11.0
Affected range stops below 2.11.0, so it looks safe — our inference, not a vendor statement
Autolab· Autolab
60%
v < 2.11.0
Affected range stops below 2.11.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCPatch
Source: [email protected]
https://github.com/autolab/Autolab/commit/410a9228ee265f80692334d75eb2c3b4dac6f9e5
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/autolab/Autolab/security/advisories/GHSA-h8g5-vhm4-wx6g
x_refsource_MISC
Source: [email protected]
https://securitylab.github.com/advisories/GHSL-2023-081_GHSL-2023-082_Autolab/

CVSS

7.2HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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