Cisco IOS up to 12.0.7 HTTP input validation

CVSS Meta Temp Score
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7.2$0-$5k0.00

A vulnerability was found in Cisco IOS up to 12.0.7 (Router Operating System). It has been classified as critical. This affects an unknown code of the component HTTP Handler. The manipulation with the input value %% leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string.

The bug was discovered 04/26/2000. The weakness was published 05/14/2000 as not defined posting (Bugtraq). It is possible to read the advisory at archives.neohapsis.com. This vulnerability is uniquely identified as CVE-2000-0380. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed in Perl. The exploit is shared for download at securityfocus.com. It is declared as highly functional. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 48949 (Cisco IOS HTTP Server Vulnerability - Cisco Systems), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43003 (Cisco IOS HTTP %% Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 1546.

The vulnerability is also documented in the databases at X-Force (4357) and Tenable (48949). Similar entries are available at 503, 16074, 16156 and 16414.

Productinfo

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Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Programming Language: 🔍
Download: 🔍

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 48949
Nessus Name: Cisco IOS HTTP Server Vulnerability - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: ios_http_percentpercent.rb
MetaSploit Name: Cisco IOS HTTP GET /%% Request Denial of Service
MetaSploit File: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Snort ID: 1546
Snort Message: SERVER-WEBAPP Cisco HTTP double-percent DOS attempt
Snort Class: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

04/26/2000 🔍
04/26/2000 +0 days 🔍
04/26/2000 +0 days 🔍
04/26/2000 +0 days 🔍
05/14/2000 +18 days 🔍
05/14/2000 +0 days 🔍
10/15/2002 +884 days 🔍
02/21/2003 +129 days 🔍
09/01/2010 +2748 days 🔍
06/24/2014 +1392 days 🔍
05/05/2019 +1776 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: archives.neohapsis.com
Status: Not defined

CVE: CVE-2000-0380 (🔍)
OVAL: 🔍

X-Force: 4357
Vulnerability Center: 128 - [cisco-sa-20000514-ios-http-server] Cisco IOS HTTP DOS, Medium
SecurityFocus: 1154 - Cisco IOS HTTP %% Vulnerability
OSVDB: 1302 - Cisco IOS HTTP Service %% GET Request Remote DoS

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 06/24/2014 12:59
Updated: 05/05/2019 08:22
Changes: 06/24/2014 12:59 (83), 05/05/2019 08:22 (8)
Complete: 🔍

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