VDB-94124 · CVE-2016-9631 · ID 42

Tatsuya Kinoshita w3m up to 0.5.3-32 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.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Tatsuya Kinoshita w3m up to 0.5.3-32. This affects an unknown function. Such manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2016-9631. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Tatsuya Kinoshita w3m up to 0.5.3-32 (Web Browser). Affected by this issue is some unknown functionality. 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. CVE summarizes:

An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-33. w3m allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted HTML page.

The bug was discovered 11/23/2016. The weakness was shared 12/12/2016 (Website). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2016-9631 since 11/23/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95650 (SUSE SLED12 / SLES12 Security Update : w3m (SUSE-SU-2016:3053-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169597 (OpenSuSE Security Update for w3m (openSUSE-SU-2016:3121-1)).

Upgrading to version 0.5.3-33 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (95650). The entries VDB-94095, VDB-94096, VDB-94097 and VDB-94098 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Web Browser

Vendor

Tatsuya Kinoshita

Name

Version

0.5.3-32

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 95650
Nessus Name: SUSE SLED12 / SLES12 Security Update : w3m (SUSE-SU-2016:3053-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for w3m FEDORA-2017-783e8fa63e
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: w3m 0.5.3-33

Timelineinfo

11/23/2016 🔍
11/23/2016 +0 days 🔍
12/08/2016 +15 days 🔍
12/08/2016 +0 days 🔍
12/11/2016 +3 days 🔍
12/12/2016 +1 days 🔍
12/12/2016 +0 days 🔍
09/17/2024 +2836 days 🔍