QNAP QTS up to 4.2.6/4.3.3/4.3.4/4.3.5 memory corruption

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 rated as critical. This affects an unknown function. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2018-14749. The attack is possible to be carried out remotely. No exploit exists.

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). It has been declared as critical. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Buffer Overflow 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 have unspecified impact on the NAS.

The bug was discovered 11/22/2018. The weakness was disclosed 11/28/2018 (Website). It is possible to read the advisory at qnap.com. This vulnerability is known as CVE-2018-14749 since 07/30/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not 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.

The entries VDB-127264, VDB-127265 and VDB-127266 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for 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

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