Tatsuya Kinoshita w3m up to 0.5.3-32 null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Tatsuya Kinoshita w3m up to 0.5.3-32. Affected by this vulnerability is an unknown functionality. The manipulation results in null pointer dereference. This vulnerability is identified as CVE-2016-9623. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Tatsuya Kinoshita w3m up to 0.5.3-32 (Web Browser). Affected is an unknown functionality. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on 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 released 12/12/2016 (Website). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2016-9623 since 11/23/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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 169423 (SUSE Enterprise Linux Security Update for w3m (SUSE-SU-2016:3053-1)).

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). Entries connected to this vulnerability are available at VDB-94095, VDB-94096, VDB-94097 and VDB-94098. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

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: 🔍

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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 🔍
10/05/2022 +2123 days 🔍

Sourcesinfo

Advisory: 33
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9623 (🔍)
GCVE (CVE): GCVE-0-2016-9623
GCVE (VulDB): GCVE-100-94116
See also: 🔍

Entryinfo

Created: 12/12/2016 09:37
Updated: 10/05/2022 19:22
Changes: 12/12/2016 09:37 (71), 06/25/2019 15:05 (4), 10/05/2022 19:22 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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