Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-38687

Severity CVSS v4.0:
Pending analysis
Type:
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Publication date:
29/12/2021
Last modified:
10/01/2022

Description

A stack buffer overflow vulnerability has been reported to affect QNAP NAS running Surveillance Station. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of Surveillance Station: QTS 5.0.0 (64 bit): Surveillance Station 5.2.0.4.2 ( 2021/10/26 ) and later QTS 5.0.0 (32 bit): Surveillance Station 5.2.0.3.2 ( 2021/10/26 ) and later QTS 4.3.6 (64 bit): Surveillance Station 5.1.5.4.6 ( 2021/10/26 ) and later QTS 4.3.6 (32 bit): Surveillance Station 5.1.5.3.6 ( 2021/10/26 ) and later QTS 4.3.3: Surveillance Station 5.1.5.3.6 ( 2021/10/26 ) and later

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:qnap:surveillance_station:*:*:*:*:*:*:*:* 5.2.0.4.2 (excluding)
cpe:2.3:o:qnap:qts:5.0.0:*:*:*:*:*:x64:*
cpe:2.3:a:qnap:surveillance_station:*:*:*:*:*:*:*:* 5.2.0.3.2 (excluding)
cpe:2.3:o:qnap:qts:5.0.0:*:*:*:*:*:x86:*
cpe:2.3:a:qnap:surveillance_station:*:*:*:*:*:*:*:* 5.1.5.4.6 (excluding)
cpe:2.3:o:qnap:qts:4.3.6:*:*:*:*:*:x64:*
cpe:2.3:a:qnap:surveillance_station:*:*:*:*:*:*:*:* 5.1.5.3.6 (excluding)
cpe:2.3:o:qnap:qts:4.3.6:*:*:*:*:*:x86:*
cpe:2.3:a:qnap:surveillance_station:*:*:*:*:*:*:*:* 5.1.5.3.6 (excluding)
cpe:2.3:o:qnap:qts:4.3.3:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools