Cisco IOS 12.2 HTTP GET Request memory corruption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability was found in Cisco IOS 12.2 (Router Operating System). It has been classified as critical. This affects an unknown part of the component HTTP GET Request Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 07/31/2003. The weakness was presented 07/30/2003 by FX with Phenoelit (Website). The advisory is shared at This vulnerability is uniquely identified as CVE-2003-0647 since 08/04/2003. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

After 2 weeks, there has been an exploit disclosed. It is declared as proof-of-concept. The exploit is shared for download at We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 17787 (Cisco IOS Software Overly Long GET Request Causes Buffer Overflow in HTTP Server), 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 local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43054 (Cisco IOS 2GB HTTP GET Buffer Overflow Vulnerability).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 8373), X-Force (12784), Secunia (SA9397), Vulnerability Center (SBV-1710) and Tenable (17787). Further details are available at See 201 for similar entry.





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 17787
Nessus Name: Cisco IOS Software Overly Long GET Request Causes Buffer Overflow in HTTP Server
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍



07/30/2003 🔍
07/30/2003 +0 days 🔍
07/30/2003 +0 days 🔍
07/31/2003 +1 days 🔍
07/31/2003 +0 days 🔍
07/31/2003 +0 days 🔍
07/31/2003 +0 days 🔍
08/04/2003 +3 days 🔍
08/08/2003 +4 days 🔍
08/19/2003 +11 days 🔍
08/27/2003 +8 days 🔍
01/10/2012 +3058 days 🔍
07/27/2018 +2390 days 🔍
06/26/2019 +334 days 🔍



Researcher: FX
Organization: Phenoelit
Status: Not defined

CVE: CVE-2003-0647 (🔍)
SecurityFocus: 8373 - Cisco IOS 2GB HTTP GET Buffer Overflow Vulnerability
Secunia: 9397 - Cisco IOS Long HTTP Request Buffer Overflow, Moderately Critical
X-Force: 12784
Vulnerability Center: 1710 - [cisco-sn-20030730-ios-2gb-get] Buffer Overflow in Cisco IOS HTTP Server via Long HTTP Requests, Medium
OSVDB: 2342 - Cisco IOS Long HTTP GET Request Overflow

scip Labs:
Misc.: 🔍
See also: 🔍


Created: 07/31/2003 03:37 PM
Updated: 06/26/2019 10:41 AM
Changes: (3) countermeasure_date source_securityfocus_date source_securityfocus_class
Complete: 🔍


No comments yet. Please log in to comment.

Interested in the pricing of exploits?

See the underground prices here!