SB2021062407 - Multiple vulnerabilities in Contiki-NG

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Main Vulnerability Database SB2021062407

SB2021062407 - Multiple vulnerabilities in Contiki-NG

Published: June 24, 2021

Security Bulletin ID SB2021062407
Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2021-21280)

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

The vulnerability exists due to a boundary condition when processing 6LoWPAN extension headers. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.


2) Out-of-bounds write (CVE-ID: CVE-2021-21257)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in RPL-Classic and RPL-Lite implementations. A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.


3) Infinite loop (CVE-ID: CVE-2021-21279)

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

The vulnerability exists due to infinite loop in IPv6 neighbor solicitation processing. A remote attacker can consume all available system resources and cause denial of service conditions.


4) Buffer overflow (CVE-ID: CVE-2021-21281)

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

The vulnerability exists due to improper validation of TCP data offset. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.

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


Remediation

Install update from vendor's website.

References