PT-2010-4331 · Cisco · Cisco Ios

Published 2010-09-22 · Updated 2010-09-24 · CVE-2010-2836

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS versions 12.4, 15.0, and 15.1

Description A memory leak in the SSL VPN feature of Cisco IOS allows remote attackers to cause a denial of service by improperly disconnecting SSL sessions, leading to connections that remain in the CLOSE-WAIT state. This could result in a memory exhaustion condition, causing device reloads, the inability to service new TCP connections, and other denial of service conditions.

Recommendations For Cisco IOS versions 12.4, 15.0, and 15.1, update to a version that includes the software updates released by Cisco to address this vulnerability. As a temporary workaround, consider disabling the HTTP port redirection feature in the SSL VPN configuration to mitigate this issue.

Fix

DoS

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2010-2836

Affected Products

Cisco Ios

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2010-2836 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100922-sslvpn · Vendor Advisory
• http://cisco.com/en/US/products/products_security_advisory09186a0080b4a312.shtml · Vendor Advisory