CVE-2017-17831
GitHub Git LFS Arbitrary command execution vulnerability
GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a "url =" line in a .lfsconfig file within a repository.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a "url =" line in a .lfsconfig file within a repository.
- Record
CVE-2017-17831- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a "url =" line in a .lfsconfig file within a repository.
- Record
CVE-2017-17831- Updated
- 2026-11-02
EUVDEUVD-2022-5497 No score
GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a "url =" line in a .lfsconfig file within a repository.
- Record
EUVD-2022-5497- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w4xh-w33p-4v29
GitHub Git LFS Arbitrary command execution vulnerability
GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a url = line in a .lfsconfig file within a repository.
Specific Go Packages Affected
github.com/git-lfs/git-lfs/lfsapi
- Record
GHSA-w4xh-w33p-4v29- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a "url =" line in a .lfsconfig file within a repository.
- Record
CVE-2017-17831- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-w4xh-w33p-4v29
GitHub Git LFS Arbitrary command execution vulnerability
GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a url = line in a .lfsconfig file within a repository.
Specific Go Packages Affected
github.com/git-lfs/git-lfs/lfsapi
- Record
GHSA-w4xh-w33p-4v29- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-17831
GitHub Git LFS before 2.1.1 allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, located on a "url =" line in a .lfsconfig file within a repository.
- Record
UBUNTU-CVE-2017-17831- CVSS 3.0
- 8.8 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGO-2021-0073 No score
Arbitrary command execution in github.com/git-lfs/git-lfs
Arbitrary command execution can be triggered by improperly sanitized SSH URLs in LFS configuration files. This can be triggered by cloning a malicious repository.
- Record
GO-2021-0073- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/git-lfs/git-lfsGo |
before 2.1.1-0.20170519163204-f913f5f9c7c6 | 2.1.1-0.20170519163204-f913f5f9c7c6 |
github.com/git-lfs/git-lfsGo |
before 2.1.1-0.20170519163204-f913f5f9c7c6+incompatible | 2.1.1-0.20170519163204-f913f5f9c7c6+incompatible |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-17831 is a high vulnerability (CVSS 8.8) in Git Large File Storage Project Large File Storage, published December 21, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.68%, the 89th percentile. Fixed in github.com/git-lfs/git-lfs 2.1.1-0.20170519163204-f913f5f9c7c6.
References
github.com/git-lfs/git-lfs/releases/tag/v2.1.1
blog.recurity-labs.com/2017-08-10/scm-vulns
securityfocus.com/bid/102926
confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html
nvd.nist.gov/vuln/detail/CVE-2017-17831
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pkg.go.dev/vuln/GO-2021-0073
web.archive.org/web/20200227131639/http://www.securityfocus.com/bid/102926
ubuntu.com/security/CVE-2017-17831
cve.org/CVERecord?id=CVE-2017-17831