CVE-2024-20308

Description

A vulnerability in the IKEv1 fragmentation code of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a heap underflow, resulting in an affected device reloading. This vulnerability exists because crafted, fragmented IKEv1 packets are not properly reassembled. An attacker could exploit this vulnerability by sending crafted UDP packets to an affected system. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: Only traffic that is directed to the affected system can be used to exploit this vulnerability. This vulnerability can be triggered by IPv4 and IPv6 traffic..

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.48%
Vendor Advisory cisco.com
Affected: Cisco IOS
Affected: Cisco Cisco IOS XE Software
Published at:
Updated at:

References

Link Tags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ikev1-NO2ccFWz vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-20308?
CVE-2024-20308 has been scored as a high severity vulnerability.
How to fix CVE-2024-20308?
To fix CVE-2024-20308, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-20308 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-20308 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-20308?
CVE-2024-20308 affects Cisco IOS, Cisco Cisco IOS XE Software.
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