High severity · published Mar 23, 2023
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…
7.5
CVSS
1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IX
IOS XE · Cisco
3.3.0xo; 3.3.1xo; 3.3.2xo; 3.4.0sg; 3.4.1sg; 3.4.2sg; +34 more · source: NVD
IO
Ios · Cisco
12.2(6)i1; 15.1(2)sg; 15.1(2)sg1; 15.1(2)sg2; 15.1(2)sg3; 15.1(2)sg4; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-20080
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-20080
Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-dhcpv6-dos-44cMvdDK
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