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CVE-2023-20080

HIGHCVSS 7.5/10EPSS 0.95%

Last modified

CVE-2023-20080 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability in the IPv6 DHCP version 6 (DHCPv6) relay and server features of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to insufficient validation of data boundaries. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

Description

A vulnerability in the IPv6 DHCP version 6 (DHCPv6) relay and server features of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to insufficient validation of data boundaries. An attacker could exploit this vulnerability by sending crafted DHCPv6 messages to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.95%

56.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos12.2\(6\)i1
CiscoIos15.1\(2\)sg
CiscoIos15.1\(2\)sg1
CiscoIos15.1\(2\)sg2
CiscoIos15.1\(2\)sg3
CiscoIos15.1\(2\)sg4
CiscoIos15.1\(2\)sg5
CiscoIos15.1\(2\)sg6
CiscoIos15.1\(2\)sg7
CiscoIos15.1\(2\)sg8
CiscoIos15.1\(2\)sy1
CiscoIos15.1\(2\)sy2
CiscoIos15.1\(2\)sy3
CiscoIos15.1\(2\)sy4
CiscoIos15.1\(2\)sy4a
CiscoIos15.1\(2\)sy5
CiscoIos15.1\(2\)sy6
CiscoIos15.1\(2\)sy7
CiscoIos15.1\(2\)sy8
CiscoIos15.1\(2\)sy9
CiscoIos15.1\(2\)sy10
CiscoIos15.1\(2\)sy11
CiscoIos15.1\(2\)sy12
CiscoIos15.1\(2\)sy13
CiscoIos15.1\(2\)sy14
CiscoIos15.1\(2\)sy15
CiscoIos15.1\(2\)sy16
CiscoIos15.1\(2\)sy16a
CiscoIos15.1\(3\)svr10
CiscoIos15.1\(3\)svs
CiscoIos15.1\(3\)svt1
CiscoIos15.1\(3\)svt3
CiscoIos15.1\(3\)svt4
CiscoIos15.1\(3\)svu1
CiscoIos15.1\(3\)svu2
CiscoIos15.1\(3\)svu10
CiscoIos15.1\(3\)svu11
CiscoIos15.1\(3\)svu20
CiscoIos15.1\(3\)svu21
CiscoIos15.1\(3\)svv1
CiscoIos15.1\(3\)svv2
CiscoIos15.1\(3\)svv3
CiscoIos15.1\(3\)svw
CiscoIos15.1\(3\)svw1
CiscoIos15.1\(3\)svx
CiscoIos15.1\(3\)svx1
CiscoIos15.1\(4\)m7
CiscoIos15.1\(4\)m8
CiscoIos15.1\(4\)m9
CiscoIos15.1\(4\)m10

Showing 50 of 852 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-20080?
A vulnerability in the IPv6 DHCP version 6 (DHCPv6) relay and server features of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to insufficient validation of data boundaries. An attacker could exploit this vulnerability by sending crafted DHCPv6 messages to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly.
How severe is CVE-2023-20080?
CVE-2023-20080 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.
How do I fix CVE-2023-20080?
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-2023-20080?

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

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Source: NVD / NIST