CVE-2016-6422 Security feature bypass in n/a
Remote attackers can bypass access restrictions on Cisco IOS devices by sending packets that evade TCAM share ACL filters due to improper handling of operators and keywords.
- 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-2016-6422?
CVE-2016-6422 is a high-severity vulnerability in Cisco Ios, published on 6 Oct 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco IOS 12.2(33)SXJ9 on Supervisor Engine 32 and 720 modules for 6500 and 7600 devices mishandles certain operators, flags, and keywords in TCAM share ACLs, which allows remote attackers to bypass intended access restrictions by sending packets that should have been recognized by a filter, aka Bug ID CSCuy64806.
Weakness: CWE-20
Which versions are affected by CVE-2016-6422?
It affects 1 product.
Products include Cisco Ios.
How do I fix CVE-2016-6422?
No fix has been published for CVE-2016-6422 yet. Limit exposure of the affected software until one is available.
Is CVE-2016-6422 being exploited?
There is no known exploitation of CVE-2016-6422 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-phhm-6h54-j6xc.