QNAP QTS up to 4.2.6/4.3.3/4.3.4/4.3.5 Media Server null pointer dereference

Summaryinfo

A vulnerability was found in QNAP QTS up to 4.2.6/4.3.3/4.3.4/4.3.5. It has been classified as problematic. The affected element is an unknown function of the component Media Server. The manipulation leads to null pointer dereference. This vulnerability is referenced as CVE-2018-14747. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in QNAP QTS up to 4.2.6/4.3.3/4.3.4/4.3.5 (Network Attached Storage Software) and classified as problematic. This issue affects an unknown code block of the component Media Server. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

NULL Pointer Dereference vulnerability in QTS 4.3.5 build 20181013, QTS 4.3.4 build 20181008, QTS 4.3.3 build 20180829, QTS 4.2.6 build 20180829 and earlier versions could allow remote attackers to crash the NAS media server.

The bug was discovered 11/22/2018. The weakness was published 11/28/2018 (Website). The advisory is shared at qnap.com. The identification of this vulnerability is CVE-2018-14747 since 07/30/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13384 (QNAP QTS Multiple Vulnerabilties (NAS-201811-22)).

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

Similar entries are available at VDB-127264, VDB-127266 and VDB-127267. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Network Attached Storage Software

Vendor

• QNAP

Name

• QTS

Version

• 4.2.0
• 4.2.1
• 4.2.2
• 4.2.3
• 4.2.4
• 4.2.5
• 4.2.6
• 4.3.0
• 4.3.1
• 4.3.2
• 4.3.3
• 4.3.4
• 4.3.5

License

• commercial

Website

• Vendor: https://www.qnap.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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

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