PT-2014-8377 · Cisco+1 · Cisco Ios Xr+1

Published 2014-11-25 · Updated 2017-09-08 · CVE-2014-8005

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco IOS XR versions 5.1 and earlier

Description A race condition in the lighttpd module allows remote attackers to cause a denial of service by establishing many TCP sessions. The vulnerability is due to a race condition while handling TCP sessions to the lighttpd module on the affected device. An attacker could exploit this vulnerability by sending a number of TCP sessions to be established with the lighttpd server on the affected device, potentially allowing the attacker to cause a reload of the lighttpd process. The attacker may need access to trusted, internal networks behind a firewall to send numerous TCP sessions to the targeted device.

Recommendations For Cisco IOS XR versions 5.1 and earlier, update to a newer version that includes the fix for this issue, as confirmed by Cisco in their security notice. As a temporary workaround, consider restricting access to the lighttpd module to minimize the risk of exploitation.

Fix

DoS

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2014-8005

Affected Products

Cisco Ios Xr

Lighttpd

References · 7

• http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-8005 · Vendor Advisory
• http://tools.cisco.com/security/center/viewAlert.x?alertId=36532 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2014-8005 · Security Note
• http://securityfocus.com/bid/71287 · Note
• http://securitytracker.com/id/1031262 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/98937 · Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/Cisco-SA-20141125-CVE-2014-8005 · Note