Linux Kernel up to 3.14.4 Netfilter Subsystem nf_conntrack_extend.h null pointer dereference

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.
3.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 3.14.4. Affected is an unknown function of the file include/net/netfilter/nf_conntrack_extend.h of the component Netfilter Subsystem. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2014-9715. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 3.14.4 (Operating System) and classified as problematic. This issue affects an unknown code of the file include/net/netfilter/nf_conntrack_extend.h of the component Netfilter Subsystem. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

include/net/netfilter/nf_conntrack_extend.h in the netfilter subsystem in the Linux kernel before 3.14.5 uses an insufficiently large data type for certain extension data, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via outbound network traffic that triggers extension loading, as demonstrated by configuring a PPTP tunnel in a NAT environment.

The weakness was shared 05/27/2015 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2014-9715 since 04/08/2015. An attack has to be approached locally. A simple authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 83758 , which helps to determine the existence of the flaw in a target environment. It is . The commercial vulnerability scanner Qualys is able to test this issue with plugin 155293 (Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2015-3066)).

Upgrading to version 3.14.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (83758), SecurityFocus (BID 73014†), SecurityTracker (ID 1032415†) and Vulnerability Center (SBV-50435†). The entries VDB-73983 and VDB-74643 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 83758
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Port: 🔍

OpenVAS ID: 703237
OpenVAS Name: Debian Security Advisory DSA 3237-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 3.14.5
Patch: 223b02d923ecd7c84cf9780bb3686f455d279279

Timelineinfo

04/08/2015 🔍
04/26/2015 +18 days 🔍
05/21/2015 +25 days 🔍
05/27/2015 +6 days 🔍
05/27/2015 +0 days 🔍
05/28/2015 +1 days 🔍
05/28/2015 +0 days 🔍
06/09/2015 +12 days 🔍
05/19/2022 +2536 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2611-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-9715 (🔍)
GCVE (CVE): GCVE-0-2014-9715
GCVE (VulDB): GCVE-100-75569

OVAL: 🔍

SecurityFocus: 73014
SecurityTracker: 1032415
Vulnerability Center: 50435 - Linux Kernel <3.14.5 Local DoS via Outbound Network Traffic, Medium

See also: 🔍

Entryinfo

Created: 05/28/2015 10:17
Updated: 05/19/2022 13:21
Changes: 05/28/2015 10:17 (67), 03/01/2018 07:58 (8), 05/19/2022 13:10 (5), 05/19/2022 13:16 (1), 05/19/2022 13:21 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!