CVE-2009-0635

Description

Memory leak in the Cisco Tunneling Control Protocol (cTCP) encapsulation feature in Cisco IOS 12.4, when an Easy VPN (aka EZVPN) server is enabled, allows remote attackers to cause a denial of service (memory consumption and device crash) via a sequence of TCP packets.

Category

7.1
CVSS
Severity: High
CVSS 2.0 •
EPSS 1.26% Top 25%
Vendor Advisory cisco.com Vendor Advisory secunia.com Vendor Advisory cisco.com Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml patch vendor advisory
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml patch vendor advisory
http://secunia.com/advisories/34438 third party advisory vendor advisory
http://www.securityfocus.com/bid/34246 vdb entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/49417 vdb entry
http://www.securitytracker.com/id?1021895 vdb entry
http://www.vupen.com/english/advisories/2009/0851 vdb entry vendor advisory

Frequently Asked Questions

What is the severity of CVE-2009-0635?
CVE-2009-0635 has been scored as a high severity vulnerability.
How to fix CVE-2009-0635?
To fix CVE-2009-0635, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-0635 being actively exploited in the wild?
It is possible that CVE-2009-0635 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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