CVE-2020-3569: Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability
First published: Wed Sep 23 2020(Updated: )
Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XR | ||
| Cisco 8201 | ||
| Cisco 8202 | ||
| Cisco 8808 | ||
| Cisco 8812 | ||
| Cisco 8818 | ||
| Cisco Asr 9000v | ||
| Cisco Asr 9001 | ||
| Cisco Asr 9006 | ||
| Cisco Asr 9010 | ||
| Cisco Asr 9901 | ||
| Cisco Asr 9903 | ||
| Cisco Asr 9904 | ||
| Cisco Asr 9906 | ||
| Cisco Asr 9910 | ||
| Cisco Asr 9912 | ||
| Cisco Asr 9922 | ||
| Cisco Ios Xrv 9000 Router | ||
| Cisco Ncs 5001 | ||
| Cisco Ncs 5002 | ||
| Cisco Ncs 5011 | ||
| Cisco Ncs 520 | ||
| Cisco Ncs 540 | ||
| Cisco Ncs 5501 | ||
| Cisco Ncs 5501 | =se | |
| Cisco Ncs 5502 | ||
| Cisco Ncs 5502 | =se | |
| Cisco Ncs 5508 | ||
| Cisco Ncs 5516 | ||
| Cisco Ncs 560 | ||
| Cisco Ncs 6008 | ||
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Reference Links
Frequently Asked Questions
What is CVE-2020-3569?
CVE-2020-3569 is a memory exhaustion vulnerability in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software.
How does CVE-2020-3569 affect Cisco IOS XR Software?
CVE-2020-3569 allows an unauthenticated, remote attacker to either crash the Internet Group Management Protocol (IGMP) process or consume available memory and eventually crash the system.
What is the severity of CVE-2020-3569?
The severity of CVE-2020-3569 is rated as high with a CVSS score of 7.5.
Which products are affected by CVE-2020-3569?
Cisco IOS XR Software versions are affected by CVE-2020-3569.
How can I fix CVE-2020-3569?
To fix CVE-2020-3569, it is recommended to upgrade to the fixed software version provided by Cisco.
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- collector/cisa-known-exploited
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- agent/software-canonical-lookup
- collector/nvd-index
- vendor/cisco
- canonical/cisco ios xr
- canonical/cisco 8201
- canonical/cisco 8202
- canonical/cisco 8808
- canonical/cisco 8812
- canonical/cisco 8818
- canonical/cisco asr 9000v
- canonical/cisco asr 9001
- canonical/cisco asr 9006
- canonical/cisco asr 9010
- canonical/cisco asr 9901
- canonical/cisco asr 9903
- canonical/cisco asr 9904
- canonical/cisco asr 9906
- canonical/cisco asr 9910
- canonical/cisco asr 9912
- canonical/cisco asr 9922
- canonical/cisco ios xrv 9000 router
- canonical/cisco ncs 5001
- canonical/cisco ncs 5002
- canonical/cisco ncs 5011
- canonical/cisco ncs 520
- canonical/cisco ncs 540
- canonical/cisco ncs 5501
- version/cisco ncs 5501/se
- canonical/cisco ncs 5502
- version/cisco ncs 5502/se
- canonical/cisco ncs 5508
- canonical/cisco ncs 5516
- canonical/cisco ncs 560
- canonical/cisco ncs 6008