SB2020071912 - Multiple vulnerabilities in SolarWinds Serv-U FTP Server

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Main Vulnerability Database SB2020071912

SB2020071912 - Multiple vulnerabilities in SolarWinds Serv-U FTP Server

Published: July 19, 2020 Updated: March 6, 2024

Security Bulletin ID SB2020071912
CSH Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 20% Medium 60% Low 20%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 vulnerabilities.


1) Information disclosure (CVE-ID: N/A)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output in HTTP Responses. A remote attacker can gain unauthorized access to sensitive information on the system.


2) Prototype pollution (CVE-ID: CVE-2019-11358)

CWE-ID: CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes (\'Prototype Pollution\')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear


The vulnerability allows a remote attacker to execute arbitrary JavaScript code.

The vulnerability exists due to improper input validation. A remote attacker can pass specially crafted input to the application and perform prototype pollution, which can result in information disclosure or data manipulation.


3) OS Command Injection (CVE-ID: CVE-2020-15541)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


4) Security restrictions bypass (CVE-ID: CVE-2020-15542)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to application does not properly impose security restrictions when processing the CHMOD command. A remote authenticated user can bypass implemented security restrictions and gain access to otherwise restricted directories on the system.


5) Input validation error (CVE-ID: CVE-2020-15543)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to insufficient validation of user-supplied input when processing command arguments. A remote authenticated user can bypass implemented security restrictions.


Remediation

Install update from vendor's website.

References