CVE-2013-5543 Denial of service in n/a
Remote attackers can cause a denial of service on Cisco ASR devices by sending malformed ICMP packets to sessions inspected by the Zone-Based Firewall.
- 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-2013-5543?
CVE-2013-5543 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 31 Oct 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cisco IOS XE 3.4 before 3.4.2S and 3.5 before 3.5.1S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) via malformed ICMP error packets associated with a (1) TCP or (2) UDP session that is under inspection by the Zone-Based Firewall (ZBFW) component, aka Bug ID CSCtt26470.
Weakness: CWE-20
Which versions are affected by CVE-2013-5543?
It affects 7 products.
Products include Cisco Asr 1001, Cisco Asr 1002, Cisco Asr 1002-X, Cisco Asr 1004, Cisco Asr 1006, Cisco Asr 1023 Router and 1 more.
How do I fix CVE-2013-5543?
No fix has been published for CVE-2013-5543 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-2013-5543 being exploited?
There is no known exploitation of CVE-2013-5543 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios Xe
Sources
Also known as GHSA-hxjm-hq6x-h7px.