Atlassian SourceTree up to 3.1.0 on MacOS Mercurial Repository Filename argument injection

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Atlassian SourceTree up to 3.1.0 on MacOS. It has been rated as critical. This impacts an unknown function of the component Mercurial Repository Handler. Performing a manipulation as part of Filename results in argument injection. This vulnerability is identified as CVE-2018-20234. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Atlassian SourceTree up to 3.1.0 on MacOS. This affects an unknown function of the component Mercurial Repository Handler. The manipulation as part of a Filename leads to a argument injection vulnerability. CWE is classifying the issue as CWE-88. The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

There was an argument injection vulnerability in Atlassian Sourcetree for macOS from version 1.2 before version 3.1.1 via filenames in Mercurial repositories. A remote attacker with permission to commit to a Mercurial repository linked in Sourcetree for macOS is able to exploit this issue to gain code execution on the system.

The bug was discovered 02/20/2019. The weakness was released 03/08/2019 (Website). The advisory is shared at jira.atlassian.com. This vulnerability is uniquely identified as CVE-2018-20234 since 12/19/2018. It is possible to initiate the attack remotely. The successful exploitation requires a authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 16 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371705 (Atlassian Sourcetree Multiple Remote Code Execution Vulnerabilities).

Upgrading to version 3.1.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105523†). Entries connected to this vulnerability are available at VDB-124949, VDB-131482 and VDB-131483. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Atlassian

Name

SourceTree

Version

License

free

Website

Vendor: https://www.atlassian.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Argument injection
CWE: CWE-88 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SourceTree 3.1.1

Timelineinfo

10/05/2018 🔍
12/19/2018 +75 days 🔍
02/20/2019 +63 days 🔍
03/08/2019 +16 days 🔍
03/09/2019 +1 days 🔍
07/29/2023 +1603 days 🔍

Sourcesinfo

Vendor: atlassian.com

Advisory: 152173
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-20234 (🔍)
GCVE (CVE): GCVE-0-2018-20234
GCVE (VulDB): GCVE-100-131481
SecurityFocus: 105523 - Git CVE-2018-17456 Arbitrary Code Execution Vulnerability

See also: 🔍

Entryinfo

Created: 03/09/2019 07:27
Updated: 07/29/2023 15:41
Changes: 03/09/2019 07:27 (64), 05/14/2020 18:48 (4), 07/29/2023 15:41 (4)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.