Cisco IOS up to 12.2xq PPTP denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS up to 12.2xq. It has been rated as problematic. Impacted is an unknown function of the component PPTP Handler. Performing a manipulation results in denial of service. This vulnerability is cataloged as CVE-2001-1183. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Cisco IOS up to 12.2xq (Router Operating System). It has been classified as problematic. This affects an unknown function of the component PPTP Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

PPTP implementation in Cisco IOS 12.1 and 12.2 allows remote attackers to cause a denial of service (crash) via a malformed packet.

The weakness was shared 07/12/2001 with Cisco as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. This vulnerability is uniquely identified as CVE-2001-1183. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 48958 (Cisco IOS PPTP 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 43183 (Cisco IOS PPTP Vulnerability (cisco-sa-20010712-pptp)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (6835), Tenable (48958), SecurityFocus (BID 3022†), OSVDB (802†) and Vulnerability Center (SBV-2066†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 48958
Nessus Name: Cisco IOS PPTP Vulnerability - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

07/12/2001 🔍
07/12/2001 +0 days 🔍
07/12/2001 +0 days 🔍
07/12/2001 +0 days 🔍
07/12/2001 +0 days 🔍
09/12/2002 +427 days 🔍
09/10/2003 +362 days 🔍
09/01/2010 +2548 days 🔍
07/07/2014 +1405 days 🔍
09/27/2025 +4100 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: kb.cert.org
Organization: Cisco
Status: Confirmed

CVE: CVE-2001-1183 (🔍)
GCVE (CVE): GCVE-0-2001-1183
GCVE (VulDB): GCVE-100-16989

OVAL: 🔍

CERT: 🔍
X-Force: 6835
SecurityFocus: 3022 - Cisco IOS Malformed PPTP Packet Denial of Service Vulnerability
OSVDB: 802 - Cisco IOS Malformed PPTP Packet Remote DoS
Vulnerability Center: 2066 - [cisco-sa-20010712-pptp] Cisco IOS 12.1 and 12.2 PPTP DoS, Medium

Entryinfo

Created: 07/07/2014 13:12
Updated: 09/27/2025 22:34
Changes: 07/07/2014 13:12 (72), 05/12/2019 20:37 (1), 12/15/2024 05:32 (17), 09/27/2025 22:34 (2)
Complete: 🔍
Cache ID: 216:750:103

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