HOMEVULNERABILITIESCVE-2017-17831
HIGH

CVE-2017-17831

CWE-20Published: December 21, 2017· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2017-17831 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

git_large_file_storage_project1 product(s)
git large file storage
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/git-lfs/git-lfs/pull/2242
PATCHhttps://github.com/git-lfs/git-lfs/pull/2242
ADVISORYhttp://blog.recurity-labs.com/2017-08-10/scm-vulns
ADVISORYhttp://www.securityfocus.com/bid/102926
ADVISORYhttps://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html
ADVISORYhttps://github.com/git-lfs/git-lfs/releases/tag/v2.1.1
ADVISORYhttp://blog.recurity-labs.com/2017-08-10/scm-vulns
ADVISORYhttp://www.securityfocus.com/bid/102926
ADVISORYhttps://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.html
ADVISORYhttps://github.com/git-lfs/git-lfs/releases/tag/v2.1.1

All References (10)

→
http://blog.recurity-labs.com/2017-08-10/scm-vulnsExploit · Third Party Advisory
→
http://www.securityfocus.com/bid/102926Third Party Advisory · VDB Entry
→
https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.htmlThird Party Advisory
→
https://github.com/git-lfs/git-lfs/pull/2242Patch · Third Party Advisory
→
https://github.com/git-lfs/git-lfs/releases/tag/v2.1.1Release Notes · Third Party Advisory
→
http://blog.recurity-labs.com/2017-08-10/scm-vulnsExploit · Third Party Advisory
→
http://www.securityfocus.com/bid/102926Third Party Advisory · VDB Entry
→
https://confluence.atlassian.com/sourcetreekb/sourcetree-security-advisory-2018-01-24-942834324.htmlThird Party Advisory
→
https://github.com/git-lfs/git-lfs/pull/2242Patch · Third Party Advisory
→
https://github.com/git-lfs/git-lfs/releases/tag/v2.1.1Release Notes · Third Party Advisory

Quick Facts

CVE IDCVE-2017-17831
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedDec 21, 2017

Related CVEs (CWE-20)

CVE-2026-12537
10.0
CVE-2011-4755
10.0
CVE-2026-48055
10.0
CVE-2026-0848
10.0
CVE-2009-1300
10.0
CVE-2026-48277
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-17831 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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