GitHub Git LFS up to 2.1.0 Config File Hostname input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in GitHub Git LFS up to 2.1.0. This issue affects some unknown processing of the component Config File. Such manipulation as part of Hostname leads to input validation. This vulnerability is uniquely identified as CVE-2017-17831. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in GitHub Git LFS up to 2.1.0 (Bug Tracking Software). Affected by this issue is an unknown functionality of the component Config File. The manipulation as part of a Hostname leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The bug was discovered 12/21/2017. The weakness was disclosed 12/21/2017 (Website). The advisory is shared for download at blog.recurity-labs.com. This vulnerability is handled as CVE-2017-17831 since 12/21/2017. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 106870 (Atlassian SourceTree 0.5.1.0 < 2.4.7.0 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370786 (Sourcetree for macOS and Windows Git LFS Arbitrary Command Execution Vulnerability).

Upgrading to version 2.1.1 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (106870) and SecurityFocus (BID 102926†). The entries VDB-110335, VDB-112474 and VDB-112475 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 106870
Nessus Name: Atlassian SourceTree 0.5.1.0 < 2.4.7.0 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Git LFS 2.1.1
Patch: github.com

Timelineinfo

12/21/2017 🔍
12/21/2017 +0 days 🔍
12/21/2017 +0 days 🔍
12/21/2017 +0 days 🔍
12/21/2017 +0 days 🔍
01/24/2018 +33 days 🔍
01/24/2018 +0 days 🔍
02/16/2018 +23 days 🔍
01/18/2023 +1797 days 🔍

Sourcesinfo

Advisory: blog.recurity-labs.com
Researcher: ZhangTianqi @ Tophant
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-17831 (🔍)
GCVE (CVE): GCVE-0-2017-17831
GCVE (VulDB): GCVE-100-110972
SecurityFocus: 102926

See also: 🔍

Entryinfo

Created: 12/21/2017 14:07
Updated: 01/18/2023 16:47
Changes: 12/21/2017 14:07 (72), 12/28/2019 10:46 (3), 01/27/2021 17:32 (4), 01/18/2023 16:47 (4)
Complete: 🔍
Cache ID: 216:6BB:103

Once again VulDB remains the best source for vulnerability data.

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