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.
References (7)
Core 7
Core References
Patch, Vendor Advisory x_refsource_confirm
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90469.shtml
Patch, Vendor Advisory vendor-advisory
x_refsource_cisco
http://www.cisco.com/en/US/products/products_security_advisory09186a0080a90459.shtml
Vendor Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/34438
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/34246
Third Party Advisory, VDB Entry vdb-entry
x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/49417
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id?1021895
Vendor Advisory vdb-entry
x_refsource_vupen
http://www.vupen.com/english/advisories/2009/0851
Scores
EPSS
0.0251
EPSS Percentile
83.1%
Details
CWE
CWE-399
Status
published
Products (3)
cisco/ios
12.4t
cisco/ios
12.4xz
cisco/ios
12.4ya
Published
Mar 27, 2009
Tracked Since
Feb 18, 2026