Linux Kernel 2.6.14 PPTP NAT Helper ip_nat_helper_pptp.c memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 2.6.14. It has been rated as problematic. This impacts an unknown function of the file netfilter/ip_nat_helper_pptp.c of the component PPTP NAT Helper. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2006-0037. No exploit is available.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.14 (Operating System). It has been classified as problematic. This affects an unknown function of the file netfilter/ip_nat_helper_pptp.c of the component PPTP NAT Helper. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. The summary by CVE is:

ip_nat_pptp in the PPTP NAT helper (netfilter/ip_nat_helper_pptp.c) in Linux kernel 2.6.14, and other versions, allows local users to cause a denial of service (memory corruption or crash) via a crafted outbound packet that causes an incorrect offset to be calculated from pointer arithmetic when non-linear SKBs (socket buffers) are used.

The bug was discovered 01/16/2006. The weakness was published 01/23/2006 (Website). It is possible to read the advisory at vupen.com. This vulnerability is uniquely identified as CVE-2006-0037 since 12/20/2005. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 88 days. During that time the estimated underground price was around $25k-$100k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115318 (Linux Kernel Multiple Security Vulnerabilities).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (24204), SecurityFocus (BID 16414†), OSVDB (22466†), Secunia (SA18482†) and Vulnerability Center (SBV-10331†). Similar entries are available at VDB-1984, VDB-1985, VDB-1983 and VDB-28454. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/27/2005 🔍
12/20/2005 +54 days 🔍
01/16/2006 +27 days 🔍
01/16/2006 +0 days 🔍
01/23/2006 +7 days 🔍
01/23/2006 +0 days 🔍
01/30/2006 +7 days 🔍
02/14/2006 +15 days 🔍
03/12/2015 +3313 days 🔍
06/25/2025 +3758 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: vupen.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-0037 (🔍)
GCVE (CVE): GCVE-0-2006-0037
GCVE (VulDB): GCVE-100-28455
X-Force: 24204
SecurityFocus: 16414 - Linux Kernel Multiple Security Vulnerabilities
Secunia: 18482 - Linux Kernel Multiple Denial of Service Vulnerabilities, Moderately Critical
OSVDB: 22466 - Linux kernel PPTP NAT helper pointer difference denial of service
Vulnerability Center: 10331 - Linux Kernel Local DoS via PPTP NAT Helper ip_nat_pptp, Medium
Vupen: ADV-2006-0220

See also: 🔍

Entryinfo

Created: 03/12/2015 11:11
Updated: 06/25/2025 03:15
Changes: 03/12/2015 11:11 (55), 06/14/2019 08:21 (14), 06/25/2025 03:15 (18)
Complete: 🔍
Cache ID: 216::103

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