SB2018082501 - Multiple vulnerabilities in Mikrotik RouterOS

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Main Vulnerability Database SB2018082501

SB2018082501 - Multiple vulnerabilities in Mikrotik RouterOS

Published: August 25, 2018

Security Bulletin ID SB2018082501
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Stack-based buffer overflow (CVE-ID: CVE-2018-1156)

CWE-ID: CWE-121 - Stack-based buffer overflow

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


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

The vulnerability exists due to a boundary error within the license upgrade interface. A remote authenticated attacker can send a specially crafted request to the affected device, trigger stack-based buffer overflow and execute arbitrary code on the system.


2) Denial of service (CVE-ID: CVE-2018-1157)

CWE-ID: CWE-399 - Resource Management Errors

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


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error when processing requests within the HTTP server. A remote authenticated attacker can send specially crafted requests to the affected device and crash the HTTP server or reload the router.


3) Denial of service (CVE-ID: CVE-2018-1158)

CWE-ID: CWE-399 - Resource Management Errors

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


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error when parsing recursive JSON requests within the HTTP server. A remote authenticated attacker can send specially crafted requets to the affected device and crash the HTTP server.


4) Memory corruption (CVE-ID: CVE-2018-1159)

CWE-ID: CWE-119 - Memory corruption

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


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the HTTP server. A remote authenticated attacker can crash the affected HTTP server by rapidly authenticating and disconnecting.


Remediation

Install update from vendor's website.

References