// For flags

CVE-2020-2501

Stack Buffer Overflow in Surveillance Station

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A stack-based buffer overflow vulnerability has been reported to affect QNAP NAS devices running Surveillance Station. If exploited, this vulnerability allows attackers to execute arbitrary code. QNAP have already fixed this vulnerability in the following versions: Surveillance Station 5.1.5.4.3 (and later) for ARM CPU NAS (64bit OS) and x86 CPU NAS (64bit OS) Surveillance Station 5.1.5.3.3 (and later) for ARM CPU NAS (32bit OS) and x86 CPU NAS (32bit OS)

Se ha reportado una vulnerabilidad de desbordamiento del búfer en la región stack de la memoria que afecta a los dispositivos NAS de QNAP que ejecutan Surveillance Station. Si es explotada, esta vulnerabilidad permite a atacantes ejecutar código arbitrario. QNAP ya ha corregido esta vulnerabilidad en las siguientes versiones: Surveillance Station versiones 5.1.5.4.3 (y posterior) para ARM CPU NAS (SO de 64 bits) y x86 CPU NAS (SO de 64 bits) Surveillance Station versiones 5.1.5.3.3 (y posterior) para ARM CPU NAS (sistema operativo de 32 bits) y CPU NAS x86 (sistema operativo de 32 bits)

*Credits: An independent security researcher reported this vulnerability to SSD Secure Disclosure
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-09 CVE Reserved
  • 2021-02-17 CVE Published
  • 2024-06-22 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-121: Stack-based Buffer Overflow
  • CWE-787: Out-of-bounds Write
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://www.qnap.com/en/security-advisory/qsa-21-07 2021-02-22
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Qnap
Search vendor "Qnap"
 Surveillance Station
Search vendor "Qnap" for product "Surveillance Station"
 < 5.1.5.3.3
Search vendor "Qnap" for product "Surveillance Station" and version " < 5.1.5.3.3"
-
Affected
in Qnap
Search vendor "Qnap"
 Nas
Search vendor "Qnap" for product "Nas"
--
Safe
Qnap
Search vendor "Qnap"
 Surveillance Station
Search vendor "Qnap" for product "Surveillance Station"
 >= 5.1.5.4.0 < 5.1.5.4.3
Search vendor "Qnap" for product "Surveillance Station" and version " >= 5.1.5.4.0 < 5.1.5.4.3"
-
Affected
in Qnap
Search vendor "Qnap"
 Nas
Search vendor "Qnap" for product "Nas"
--
Safe