CVE-2015-8968
CVE-2015-8968 is a high-severity vulnerability in Squareup Git-fastclone with a CVSS 3.x base score of 8.8. 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-77.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.3
- EPSS exploit prediction: 5% (91st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Squareup Git-fastclone
- Published:
- Last modified:
Description
git-fastclone before 1.0.1 permits arbitrary shell command execution from .gitmodules. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories.
Frequently asked questions
- What is CVE-2015-8968?
- git-fastclone before 1.0.1 permits arbitrary shell command execution from .gitmodules. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories.
- How severe is CVE-2015-8968?
- CVE-2015-8968 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2015-8968 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2015-8968?
- CVE-2015-8968 affects Squareup Git-fastclone. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2015-8968?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2015-8968 published?
- CVE-2015-8968 was published on 2016-11-03 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/81433
- https://github.com/square/git-fastclone/pull/2
- https://hackerone.com/reports/104465
Affected products (1)
- cpe:2.3:a:squareup:git-fastclone:*:*:*:*:*:*:*:*
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