CVE-2024-20271 Denial of service in Cisco Aironet Access Point Software
Unauthenticated remote attackers can cause Cisco Access Points to reload unexpectedly by sending crafted IPv4 packets, resulting in a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-20271?
CVE-2024-20271 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 27 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the IP packet processing of Cisco Access Point (AP) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation of certain IPv4 packets. An attacker could exploit this vulnerability by sending a crafted IPv4 packet either to or through an affected device. A successful exploit could allow the attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To successfully exploit this vulnerability, the attacker does not need to be associated with the affected AP. This vulnerability cannot be exploited by sending IPv6 packets.
Weakness: CWE-20
Which versions are affected by CVE-2024-20271?
It affects 3 products.
Products include Cisco Business Access Points, Cisco Ios Xe, Cisco Wireless Lan Controller Software.
How do I fix CVE-2024-20271?
No fix has been published for CVE-2024-20271 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-20271 being exploited?
There is no known exploitation of CVE-2024-20271 in the wild and no public exploit code.
Sources
Also known as GHSA-ff9x-f52m-hw5m.