CVE-2013-1235 Denial of service in n/a

Medium 5.0 Published Updated

Remote attackers can cause a denial of service on Cisco Wireless LAN Controllers by exhausting resources through improperly terminated TELNET sessions.

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-2013-1235?

CVE-2013-1235 is a medium-severity denial of service vulnerability in n/a, published on 4 May 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Cisco Wireless LAN Controller (WLC) devices do not properly address the resource consumption of terminated TELNET sessions, which allows remote attackers to cause a denial of service (TELNET outage) by making many TELNET connections and improperly ending these connections, aka Bug ID CSCug35507.

Which versions are affected by CVE-2013-1235?

It affects 16 products.

Products include Cisco 2000 Wireless Lan Controller, Cisco 2100 Wireless Lan Controller, Cisco 2106 Wireless Lan Controller, Cisco 2112 Wireless Lan Controller, Cisco 2125 Wireless Lan Controller, Cisco 2500 Wireless Lan Controller and 10 more.

How do I fix CVE-2013-1235?

No fix has been published for CVE-2013-1235 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-2013-1235 being exploited?

There is no known exploitation of CVE-2013-1235 in the wild and no public exploit code.

Sources

Also known as GHSA-ffwh-46r8-rg8g.

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