CVE-2023-32676
CVE-2023-32676 is a medium-severity vulnerability in Autolabproject Autolab with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Medium (CVSS 3.x base score 6.7)
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Autolabproject Autolab
- Published:
- Last modified:
Description
Autolab is a course management service that enables auto-graded programming assignments. A Tar slip vulnerability was found in the Install assessment functionality of Autolab. To exploit this vulnerability an authenticated attacker with instructor permissions needs to upload a specially crafted Tar file. Using the install assessment functionality an attacker can feed a Tar file that contain files with paths pointing outside of the target directory (e.g., `../../../../tmp/tarslipped1.sh`). When the Install assessment form is submitted the files inside of the archives are expanded to the attacker-chosen locations. This issue has been addressed in version 2.11.0. Users are advised to upgrade.
Frequently asked questions
- What is CVE-2023-32676?
- Autolab is a course management service that enables auto-graded programming assignments. A Tar slip vulnerability was found in the Install assessment functionality of Autolab. To exploit this vulnerability an authenticated attacker with instructor permissions needs to upload a specially crafted Tar file. Using the install assessment functionality an attacker can feed a Tar file that contain files with paths pointing outside of the target directory (e.g., `../../../../tmp/tarslipped1.sh`). When the Install assessment form is submitted the files inside of the archives are expanded to the attacker-chosen locations. This issue has been addressed in version 2.11.0. Users are advised to upgrade.
- How severe is CVE-2023-32676?
- CVE-2023-32676 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.
- Is CVE-2023-32676 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-32676?
- CVE-2023-32676 affects Autolabproject Autolab. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-32676?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-32676 published?
- CVE-2023-32676 was published on 2023-05-26 and last updated on 2026-06-17.
References
- https://github.com/autolab/Autolab/commit/14f508484a8323eceb0cf3a128573b43eabbc80d
- https://github.com/autolab/Autolab/security/advisories/GHSA-x9hj-r9q4-832c
- https://securitylab.github.com/advisories/GHSL-2023-081_GHSL-2023-082_Autolab/
Affected products (1)
- cpe:2.3:a:autolabproject:autolab:*:*:*:*:*:*:*:*
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