CVE-2012-3923 Denial of service in n/a
Remote authenticated users can crash Cisco IOS devices via PPPoA sessions when DTLS is disabled, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2012-3923?
CVE-2012-3923 is a low-severity denial of service vulnerability in Cisco Ios, published on 16 Sep 2012. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The SSLVPN implementation in Cisco IOS 12.4, 15.0, 15.1, and 15.2, when DTLS is not enabled, does not properly handle certain outbound ACL configurations, which allows remote authenticated users to cause a denial of service (device crash) via a session involving a PPP over ATM (PPPoA) interface, aka Bug ID CSCte41827.
Which versions are affected by CVE-2012-3923?
It affects 1 product.
Products include Cisco Ios.
How do I fix CVE-2012-3923?
No fix has been published for CVE-2012-3923 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-2012-3923 being exploited?
There is no known exploitation of CVE-2012-3923 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-fwg7-925x-49rf.