CVE-2015-8968

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Summary

CVECVE-2015-8968
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-11-03 10:59:00 UTC
Updated2026-05-06 22:30:45 UTC
Descriptiongit-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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.028440000 probability, percentile 0.863180000 (date 2026-05-09)

Problem Types: CWE-77 | Arbitrary Command Execution

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.0[email protected]Primary9.3AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Squareup Git-fastclone All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Git-fastclone Ruby Gem All Versions Before 1.0.1 affected git-fastclone ruby gem All versions before 1.0.1 Not specified

References

ReferenceSourceLinkTags
Fixes the same issue as CVE-2015-7545. by alokmenghrajani · Pull Request #2 · square/git-fastclone · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Vendor Advisory
Square git-fastclone Multiple Remote Command Execution Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
#104465 git-fastclone allows arbitrary command execution through usage of ext remote URLs in submodules - HackerOne af854a3a-2127-422b-91ae-364da2661108 hackerone.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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