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CVE-2023-32317— Autolab tar slip in cheat checker functionality (`GHSL-2023-082`)

Quick assessment

Affected
autolab Autolab
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Autolab是一项课程管理服务。支持自动评分的编程作业。 Autolab 2.10.0及之前版本存在安全漏洞，该漏洞源于在 Autolab 的 MOSS功能中发现了 Tar slip 漏洞，攻击者利用该漏洞可以上传特制的 Tar 文件。

CVSS 6.7 · Medium EPSS 0.89% · P58
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I. Basic Information for CVE-2023-32317

Vulnerability Information
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Vulnerability Title
Autolab tar slip in cheat checker functionality (`GHSL-2023-082`)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Autolab 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Autolab是一项课程管理服务。支持自动评分的编程作业。 Autolab 2.10.0及之前版本存在安全漏洞，该漏洞源于在 Autolab 的 MOSS功能中发现了 Tar slip 漏洞，攻击者利用该漏洞可以上传特制的 Tar 文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
autolab Autolab < 2.11.0 -

II. Public POCs for CVE-2023-32317

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III. Intelligence Information for CVE-2023-32317

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Patches & Fixes for CVE-2023-32317 (1)

Vendor Advisories for CVE-2023-32317 (1)

Other References for CVE-2023-32317 (1)

IV. Related Vulnerabilities

Same product: Autolab
Same vendor: autolab
Same weakness: CWE-22

V. Comments for CVE-2023-32317

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