Arq up to 5.9.6 on Mac Auto-Update setpermissions race condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Arq up to 5.9.6 on Mac. Impacted is the function setpermissions of the component Auto-Update. This manipulation causes race condition. This vulnerability is tracked as CVE-2017-15357. The attack is restricted to local execution. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Arq up to 5.9.6 on Mac and classified as problematic. Affected by this vulnerability is the function setpermissions of the component Auto-Update. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The setpermissions function in the auto-updater in Arq before 5.9.7 for Mac allows local users to gain root privileges via a symlink attack on the updater binary itself.

The bug was discovered 11/29/2017. The weakness was disclosed 12/01/2017 (Website). The advisory is shared at arqbackup.com. This vulnerability is known as CVE-2017-15357 since 10/15/2017. An attack has to be approached locally. Required for exploitation is a single authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 5.9.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (43218). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Arq 5.9.7

Timelineinfo

10/15/2017 🔍
11/29/2017 +45 days 🔍
12/01/2017 +2 days 🔍
12/01/2017 +0 days 🔍
12/02/2017 +1 days 🔍
01/20/2025 +2606 days 🔍

Sourcesinfo

Advisory: arqbackup.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-15357 (🔍)
GCVE (CVE): GCVE-0-2017-15357
GCVE (VulDB): GCVE-100-110137
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/02/2017 09:49
Updated: 01/20/2025 22:07
Changes: 12/02/2017 09:49 (60), 12/11/2019 18:08 (5), 01/20/2025 22:07 (19)
Complete: 🔍
Cache ID: 216::103

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

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