Parallels Remote Application Server 15.5 Build 16140 Web Interface RASHTML5Gateway/ path traversal

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Parallels Remote Application Server 15.5 Build 16140 (Application Server Software). This affects an unknown code of the file RASHTML5Gateway/ of the component Web Interface. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. The summary by CVE is:

In the web interface of Parallels Remote Application Server (RAS) 15.5 Build 16140, a vulnerability exists due to improper validation of the file path when requesting a resource under the "RASHTML5Gateway" directory. A remote, unauthenticated attacker could exploit this weakness to read arbitrary files from the vulnerable system using path traversal sequences.

The bug was discovered 02/22/2018. The weakness was presented 02/28/2018 (Website). It is possible to read the advisory at blog.runesec.com. This vulnerability is uniquely identified as CVE-2017-9447 since 06/05/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The exploit is shared for download 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 6 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 Exploit-DB (442321).

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/05/2017 🔍
02/22/2018 +262 days 🔍
02/28/2018 +6 days 🔍
02/28/2018 +0 days 🔍
03/01/2018 +1 days 🔍
01/09/2020 +679 days 🔍

Sourcesinfo

Vendor: parallels.com

Advisory: blog.runesec.com
Status: Not defined

CVE: CVE-2017-9447 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/01/2018 08:05
Updated: 01/09/2020 14:54
Changes: 03/01/2018 08:05 (60), 01/09/2020 14:54 (4)
Complete: 🔍

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