Tatsuya Kinoshita w3m up to 0.5.3-30 Value memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Tatsuya Kinoshita w3m up to 0.5.3-30 (Web Browser). This issue affects an unknown part of the component Value Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The software 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. Impacted is confidentiality, integrity, and availability.

The bug was discovered 11/18/2016. The weakness was disclosed 12/12/2016 (Website). The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2016-9424 since 11/18/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 19 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95625 (SUSE SLES11 Security Update : w3m (SUSE-SU-2016:3046-1)), 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 local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169418 (SUSE Enterprise Linux Security Update for w3m (SUSE-SU-2016:3046-1)).

Upgrading to version 0.5.3-31 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 (95625). The entries 53673, 94095, 94096 and 94098 are pretty similar.






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍



VulDB Base Score: 🔍
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NVD Base Score: 🔍


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 95625
Nessus Name: SUSE SLES11 Security Update : w3m (SUSE-SU-2016:3046-1)
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: 🔍
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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: w3m 0.5.3-31


11/03/2016 🔍
11/18/2016 +15 days 🔍
11/18/2016 +0 days 🔍
12/07/2016 +19 days 🔍
12/08/2016 +1 days 🔍
12/11/2016 +3 days 🔍
12/12/2016 +1 days 🔍
12/12/2016 +0 days 🔍
10/05/2022 +2123 days 🔍


Advisory: 12
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9424 (🔍)
SecurityFocus: 94407 - w3m Multiple Security Vulnerabilities

See also: 🔍


Created: 12/12/2016 09:36 AM
Updated: 10/05/2022 05:02 PM
Changes: 12/12/2016 09:36 AM (74), 06/25/2019 05:20 PM (6), 10/05/2022 05:02 PM (3)
Complete: 🔍


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