CVE-2017-3803 Denial of service in Cisco IOS
An unauthenticated adjacent attacker can cause a memory leak in Cisco IOS switches, leading to a partial denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-3803?
CVE-2017-3803 is a medium-severity denial of service vulnerability in Cisco Ios, published on 26 Jan 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the Cisco IOS Software forwarding queue of Cisco 2960X and 3750X switches could allow an unauthenticated, adjacent attacker to cause a memory leak in the software forwarding queue that would eventually lead to a partial denial of service (DoS) condition. More Information: CSCva72252. Known Affected Releases: 15.2(2)E3 15.2(4)E1. Known Fixed Releases: 15.2(2)E6 15.2(4)E3 15.2(5)E1 15.2(5.3.28i)E1 15.2(6.0.49i)E 3.9(1)E.
Weakness: CWE-772
Which versions are affected by CVE-2017-3803?
It affects 1 product.
Products include Cisco Ios.
How do I fix CVE-2017-3803?
No fix has been published for CVE-2017-3803 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-2017-3803 being exploited?
There is no known exploitation of CVE-2017-3803 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-94r3-gpvr-mxj8.