SB2021012618 - Multiple vulnerabilities in Cisco SD-WAN

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2021012618

SB2021012618 - Multiple vulnerabilities in Cisco SD-WAN

Published: January 26, 2021

Security Bulletin ID SB2021012618
Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 80% Low 20%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2021-1241)

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

The vulnerability exists due to a boundary error in VPN tunneling features. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.


2) Buffer overflow (CVE-ID: CVE-2021-1273)

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

The vulnerability exists due to the bounds checking in the forwarding plane of the IPSec tunnel management functionality. A remote attacker can send specially crafted IPv4 or IPv6 packets, trigger memory corruption and cause a denial of service condition on the target system.


3) NULL pointer dereference (CVE-ID: CVE-2021-1274)

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

The vulnerability exists due to a NULL pointer dereference error in vDaemon. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


4) Link following (CVE-ID: CVE-2021-1278)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to the absence of validation checks for the input that is used to create symlinks. A local user can create a symlink to a target file on a specific path and cause a denial of service condition on the target system.


5) Input validation error (CVE-ID: CVE-2021-1279)

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

The vulnerability exists due to insufficient validation of user-supplied input in the SNMPv3 management feature. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References