QNAP QTS up to 4.2.6/4.3.3.0378/4.3.4.0387 memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.2$0-$5k0.00

A vulnerability was found in QNAP QTS up to 4.2.6/4.3.3.0378/4.3.4.0387 (Network Attached Storage Software) and classified as critical. This issue affects an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.

The bug was discovered 12/15/2017. The weakness was shared 12/15/2017 as NAS-201712-15 as confirmed security advisory (Website). It is possible to read the advisory at qnap.com. The identification of this vulnerability is CVE-2017-17027 since 11/28/2017. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

Multiple buffer overflow vulnerabilities were recently found in QTS 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier. If exploited, these vulnerabilities may allow remote attackers to run arbitrary code on NAS devices.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 11899 (QNAP QTS Multiple Remote Buffer Overflow Vulnerabilities).

Upgrading to version 4.2.6 Build 20171208, 4.3.3.0396 Build 20171205 or 4.3.4.0411 Beta 3 Build 20171208 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entries 110760, 110761, 110762 and 110763 are related to this item.

Productinfo

Type

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: 8.5
VulDB Meta Temp Score: 8.4

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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OpenVAS ID: 69105
OpenVAS Name: QNAP QTS Multiple RCE Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: QTS 4.2.6 Build 20171208/4.3.3.0396 Build 20171205/4.3.4.0411 Beta 3 Build 20171208

Timelineinfo

11/28/2017 🔍
12/15/2017 +17 days 🔍
12/15/2017 +0 days 🔍
12/15/2017 +0 days 🔍
12/16/2017 +1 days 🔍
12/17/2017 +1 days 🔍
12/21/2017 +4 days 🔍
12/15/2019 +724 days 🔍

Sourcesinfo

Vendor: qnap.com

Advisory: NAS-201712-15
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-17027 (🔍)
SecurityTracker: 1040018

See also: 🔍

Entryinfo

Created: 12/17/2017 09:56
Updated: 12/15/2019 18:00
Changes: 12/17/2017 09:56 (69), 12/15/2019 18:00 (6)
Complete: 🔍

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