SB2020082902 - Denial of service in Cisco IOS XR Software
Published: August 29, 2020 Updated: September 2, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2020-3566)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient queue management for Internet Group Management Protocol (IGMP) packets in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software. A remote attacker can trigger resource exhaustion by sending crafted IGMP traffic to the affected device and perform a denial of service (DoS) attack.
Note: this vulnerability is being actively exploited in the wild.
2) Resource exhaustion (CVE-ID: CVE-2020-3569)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient queue management for Internet Group Management Protocol (IGMP) packets in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software. A remote attacker can trigger resource exhaustion by sending crafted IGMP traffic to the affected device and perform a denial of service (DoS) attack.
Note: this vulnerability is being actively exploited in the wild.Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.