VDB-109269 · CVE-2017-16757 · BID 101787

Hola VPN 1.34 7za.exe permission

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 (≈)
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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.
6.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Hola VPN 1.34. The affected element is an unknown function of the file 7za.exe. Performing a manipulation results in permission. This vulnerability is cataloged as CVE-2017-16757. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in Hola VPN 1.34 (Network Encryption Software). This affects some unknown processing of the file 7za.exe. The manipulation with an unknown input leads to a permission vulnerability. CWE is classifying the issue as CWE-275. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Hola VPN 1.34 has weak permissions (Everyone:F) under %PROGRAMFILES%, which allows local users to gain privileges via a Trojan horse 7za.exe or hola.exe file.

The bug was discovered 05/03/2017. The weakness was shared 11/09/2017 by SaifAllah benMassaoud with Vulnerability Lab (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2017-16757 since 11/09/2017. An attack has to be approached locally. Required for exploitation is a authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1222 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 190 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 101787†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 7.8
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: Permission
CWE: CWE-275 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/03/2016 🔍
05/03/2017 +365 days 🔍
11/09/2017 +190 days 🔍
11/09/2017 +0 days 🔍
11/09/2017 +0 days 🔍
11/10/2017 +1 days 🔍
12/05/2019 +755 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: SaifAllah benMassaoud
Organization: Vulnerability Lab
Status: Not defined

CVE: CVE-2017-16757 (🔍)
GCVE (CVE): GCVE-0-2017-16757
GCVE (VulDB): GCVE-100-109269
SecurityFocus: 101787 - Hola VPN CVE-2017-16757 Local Privilege Escalation Vulnerability

Entryinfo

Created: 11/10/2017 13:53
Updated: 12/05/2019 14:28
Changes: 11/10/2017 13:53 (59), 12/05/2019 14:28 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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