CVE-2014-7997 Denial of service in n/a
Remote attackers can cause a full device restart on Cisco IOS Aironet access points by exploiting DHCP lease handling errors, resulting in 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-2014-7997?
CVE-2014-7997 is a medium-severity denial of service vulnerability in Cisco Ios, published on 15 Nov 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The DHCP implementation in Cisco IOS on Aironet access points does not properly handle error conditions with short leases and unsuccessful lease-renewal attempts, which allows remote attackers to cause a denial of service (device restart) by triggering a transition into a recovery state that was intended to involve a network-interface restart but actually involves a full device restart, aka Bug ID CSCtn16281.
Weakness: CWE-399
Which versions are affected by CVE-2014-7997?
It affects 1 product.
Products include Cisco Ios.
How do I fix CVE-2014-7997?
No fix has been published for CVE-2014-7997 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-2014-7997 being exploited?
There is no known exploitation of CVE-2014-7997 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios
- CVE-2017-12240 Cisco IOS and IOS XE Software DHCP Remote Code Execution
- CVE-2017-3881 Cisco IOS and IOS XE Remote Code Execution
- CVE-2018-0167 Cisco IOS, XR, and XE Software Buffer Overflow
- CVE-2017-6736 Cisco IOS and IOS XE Software SNMP Remote Code Execution
- CVE-2017-6737 Cisco IOS and IOS XE Software SNMP Remote Code Execution
Sources
Also known as GHSA-5c8v-jv86-mrjf.