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Vulnerability Details : CVE-2007-2688

The Cisco Intrusion Prevention System (IPS) and IOS with Firewall/IPS Feature Set do not properly handle certain full-width and half-width Unicode character encodings, which might allow remote attackers to evade detection of HTTP traffic.
Publish Date : 2007-05-15 Last Update Date : 2009-03-04
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- CVSS Scores & Vulnerability Types

CVSS Score
7.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID CWE id is not defined for this vulnerability

- Related OVAL Definitions

Title Definition Id Class Family
Multiple Vendor Full and Half Width Unicode Detection Bypass Vulnerability oval:org.mitre.oval:def:5465 ios
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2007-2688

# Product Type Vendor Product Version Update Edition Language
1 OS Cisco Intrusion Prevention System 4.0 Version Details Vulnerabilities
2 OS Cisco Intrusion Prevention System 5.0(1) Version Details Vulnerabilities
3 OS Cisco Intrusion Prevention System 5.0(6)p1 Version Details Vulnerabilities
4 OS Cisco Intrusion Prevention System 5.0(2) Version Details Vulnerabilities
5 OS Cisco Intrusion Prevention System 5.1(1c) Version Details Vulnerabilities
6 OS Cisco Intrusion Prevention System 5.1(1b) Version Details Vulnerabilities
7 OS Cisco Intrusion Prevention System 5.1(1a) Version Details Vulnerabilities
8 OS Cisco Intrusion Prevention System 5.1(p1) Version Details Vulnerabilities
9 OS Cisco Intrusion Prevention System 5.1(1) Version Details Vulnerabilities
10 OS Cisco Intrusion Prevention System 5.1(1e) Version Details Vulnerabilities
11 OS Cisco Intrusion Prevention System 5.1(1d) Version Details Vulnerabilities
12 OS Cisco IOS 10.0 Version Details Vulnerabilities
13 OS Cisco IOS 11.1cc Version Details Vulnerabilities
14 OS Cisco IOS 11.3 Version Details Vulnerabilities
15 OS Cisco IOS 12.0 Version Details Vulnerabilities
16 OS Cisco IOS 12.0s Version Details Vulnerabilities
17 OS Cisco IOS 12.0st Version Details Vulnerabilities
18 OS Cisco IOS 12.0t Version Details Vulnerabilities
19 OS Cisco IOS 12.1 Version Details Vulnerabilities
20 OS Cisco IOS 12.1e Version Details Vulnerabilities
21 OS Cisco IOS 12.1t Version Details Vulnerabilities
22 OS Cisco IOS 12.2t Version Details Vulnerabilities
23 OS Cisco IOS 12.2 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Cisco Intrusion Prevention System 11
Cisco IOS 12

- References For CVE-2007-2688

http://www.cisco.com/en/US/products/products_security_response09186a008083f82e.html
CISCO 20070514 HTTP Full-Width and Half-Width Unicode Encoding Evasion
http://www.frsirt.com/english/advisories/2007/1803
VUPEN ADV-2007-1803
http://www.gamasec.net/english/gs07-01.html
http://www.securityfocus.com/bid/23980
BID 23980 Multiple Products Full/Half Width Unicode Detection Evasion Vulnerability Release Date:2007-11-15
http://www.securityfocus.com/archive/1/archive/1/468633/100/0/threaded
BUGTRAQ 20070515 GS07-01 Full-Width and Half-Width Unicode Encoding IDS/IPS/WAF Bypass Vulnerability
http://www.securitytracker.com/id?1018053
SECTRACK 1018053
http://www.securitytracker.com/id?1018054
SECTRACK 1018054
http://xforce.iss.net/xforce/xfdb/34277
XF cisco-scanengine-unicode-security-bypass(34277)
http://www.kb.cert.org/vuls/id/739224
CERT-VN VU#739224
http://secunia.com/advisories/25285
SECUNIA 25285
http://www.osvdb.org/35336
OSVDB 35336

- Metasploit Modules Related To CVE-2007-2688

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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