CVE-2020-3190: Cisco IOS XR Software IPsec Packet Processor Denial of Service Vulnerability
First published: Wed Mar 04 2020(Updated: )
A vulnerability in the IPsec packet processor of Cisco IOS XR Software could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition for IPsec sessions to an affected device. The vulnerability is due to improper handling of packets by the IPsec packet processor. An attacker could exploit this vulnerability by sending malicious ICMP error messages to an affected device that get punted to the IPsec packet processor. A successful exploit could allow the attacker to deplete IPsec memory, resulting in all future IPsec packets to an affected device being dropped by the device. Manual intervention is required to recover from this situation.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XRv 9000 | <6.4.3 | |
| Cisco IOS XRv 9000 | >=6.6.0<6.6.3 | |
| Cisco IOS XRv 9000 | >=7.0.0<7.0.2 | |
| Cisco IOS XRv 9000 | >=7.1.0<7.1.1 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-3190?
CVE-2020-3190 is a vulnerability in the IPsec packet processor of Cisco IOS XR Software that could allow an unauthenticated remote attacker to cause a denial of service (DoS) condition.
How severe is CVE-2020-3190?
CVE-2020-3190 has a severity rating of 5.8 out of 10, which is considered medium.
How can I fix CVE-2020-3190?
To fix CVE-2020-3190, it is recommended to upgrade to a version of Cisco IOS XR Software that is not affected by the vulnerability.
Is Cisco IOS XR affected by CVE-2020-3190?
Yes, certain versions of Cisco IOS XR Software are affected by CVE-2020-3190.
Where can I find more information about CVE-2020-3190?
More information about CVE-2020-3190 can be found in the Cisco Security Advisory at the following link: [Cisco Security Advisory](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-ipsec-dos-q8UPX6m)
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