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CVE-2020-3217

HIGHCVSS 8.8/10EPSS 1.02%

Last modified

CVE-2020-3217 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A vulnerability in the Topology Discovery Service of Cisco One Platform Kit (onePK) in Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient length restrictions when the onePK Topology Discovery Service parses Cisco Discovery Protocol messages. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

Description

A vulnerability in the Topology Discovery Service of Cisco One Platform Kit (onePK) in Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient length restrictions when the onePK Topology Discovery Service parses Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol message to an affected device. An exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges, or to cause a process crash, which could result in a reload of the device and cause a DoS condition.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
1.02%

59.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
CiscoIos12.2\(6\)i1—
CiscoIos12.4\(25e\)jao7—
CiscoIos15.0\(2\)sg11a—
CiscoIos15.1\(3\)svr1—
CiscoIos15.2\(1\)sy—
CiscoIos15.2\(1\)sy0a—
CiscoIos15.2\(1\)sy1—
CiscoIos15.2\(1\)sy1a—
CiscoIos15.2\(1\)sy2—
CiscoIos15.2\(1\)sy3—
CiscoIos15.2\(1\)sy4—
CiscoIos15.2\(1\)sy5—
CiscoIos15.2\(1\)sy6—
CiscoIos15.2\(1\)sy7—
CiscoIos15.2\(1\)sy8—
CiscoIos15.2\(2\)sy—
CiscoIos15.2\(2\)sy1—
CiscoIos15.2\(2\)sy2—
CiscoIos15.2\(2\)sy3—
CiscoIos15.2\(3\)e—
CiscoIos15.2\(3\)e1—
CiscoIos15.2\(3\)e2—
CiscoIos15.2\(3\)e3—
CiscoIos15.2\(3\)e4—
CiscoIos15.2\(3\)e5—
CiscoIos15.2\(3\)ea—
CiscoIos15.2\(3a\)e—
CiscoIos15.2\(3m\)e2—
CiscoIos15.2\(3m\)e7—
CiscoIos15.2\(3m\)e8—
CiscoIos15.2\(4\)e—
CiscoIos15.2\(4\)e1—
CiscoIos15.2\(4\)e2—
CiscoIos15.2\(4\)e3—
CiscoIos15.2\(4\)e4—
CiscoIos15.2\(4\)e5—
CiscoIos15.2\(4\)e5a—
CiscoIos15.2\(4\)e6—
CiscoIos15.2\(4\)e7—
CiscoIos15.2\(4\)e8—
CiscoIos15.2\(4\)e9—
CiscoIos15.2\(4\)ea—
CiscoIos15.2\(4\)ea1—
CiscoIos15.2\(4\)ea2—
CiscoIos15.2\(4\)ea3—
CiscoIos15.2\(4\)ea4—
CiscoIos15.2\(4\)ea5—
CiscoIos15.2\(4\)ea6—
CiscoIos15.2\(4\)ea7—
CiscoIos15.2\(4\)ea8—

Showing 50 of 629 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3217?
A vulnerability in the Topology Discovery Service of Cisco One Platform Kit (onePK) in Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient length restrictions when the onePK Topology Discovery Service parses Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol message to an affected device. An exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges, or to cause a process crash, which could result in a reload of the device and cause a DoS condition.
How severe is CVE-2020-3217?
CVE-2020-3217 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3217?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3217?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST