Vulnerability Monitor

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CVE-2009-0635

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.

Published

2009-03-27T16:30:02.077

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.1 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

8.6

Impact Score

6.9

Weaknesses

Type: Primary
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios	12.4t	Yes
Operating System	cisco	ios	12.4xz	Yes
Operating System	cisco	ios	12.4ya	Yes

References

http://secunia.com/advisories/34438 Vendor Advisory ([email protected])
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml Patch, Vendor Advisory ([email protected])
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml Patch, Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/34246 ([email protected])
http://www.securitytracker.com/id?1021895 ([email protected])
http://www.vupen.com/english/advisories/2009/0851 Vendor Advisory ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/49417 ([email protected])
http://secunia.com/advisories/34438 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/34246 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1021895 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2009/0851 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/49417 (af854a3a-2127-422b-91ae-364da2661108)