ID CVE-2006-4650
Summary Cisco IOS 12.0, 12.1, and 12.2, when GRE IP tunneling is used and the RFC2784 compliance fixes are missing, does not verify the offset field of a GRE packet during decapsulation, which leads to an integer overflow that references data from incorrect memory locations, which allows remote attackers to inject crafted packets into the routing queue, possibly bypassing intended router ACLs.
References
Vulnerable Configurations
  • cpe:2.3:o:cisco:ios:12.0:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios:12.0:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
CVSS
Base: 2.6 (as of 17-10-2018 - 21:38)
Impact:
Exploitability:
CWE NVD-CWE-Other
CAPEC
Access
VectorComplexityAuthentication
NETWORK HIGH NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
cvss-vector via4 AV:N/AC:H/Au:N/C:P/I:N/A:N
oval via4
accepted 2008-09-08T04:00:38.826-04:00
class vulnerability
contributors
name Yuzheng Zhou
organization Hewlett-Packard
description Cisco IOS 12.0, 12.1, and 12.2, when GRE IP tunneling is used and the RFC2784 compliance fixes are missing, does not verify the offset field of a GRE packet during decapsulation, which leads to an integer overflow that references data from incorrect memory locations, which allows remote attackers to inject crafted packets into the routing queue, possibly bypassing intended router ACLs.
family ios
id oval:org.mitre.oval:def:5713
status accepted
submitted 2008-05-26T11:06:36.000-04:00
title Cisco IOS GRE Source Routing Integer Overflow ACL Bypass Vulnerability
version 3
refmap via4
bid 19878
bugtraq 20060906 Cisco IOS GRE issue
cisco 20060906 Cisco IOS GRE Decapsulation Vulnerability
misc http://www.phenoelit.de/stuff/CiscoGRE.txt
osvdb 28590
sectrack 1016799
secunia 21783
sreason 1526
vupen ADV-2006-3502
xf cisco-ios-gre-acl-bypass(28786)
Last major update 17-10-2018 - 21:38
Published 09-09-2006 - 00:04
Last modified 17-10-2018 - 21:38
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