Tatsuya Kinoshita w3m up to 0.5.3-30 addMultirowsForm memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

A vulnerability was found in Tatsuya Kinoshita w3m up to 0.5.3-30 (Web Browser). It has been classified as critical. This affects the function addMultirowsForm. 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 confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Heap-based buffer overflow in the addMultirowsForm function in w3m allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted HTML page.

The bug was discovered 11/18/2016. The weakness was released 12/12/2016 (Website). The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2016-9428 since 11/18/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 23 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 96223 (FreeBSD : w3m -- multiple vulnerabilities (eafa3aec-211b-4dd4-9b8a-a664a3f0917a)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196711 (Ubuntu Security Notification for W3m Vulnerabilities (USN-3214-1)).

Upgrading to version 0.5.3-31 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (96223). Entries connected to this vulnerability are available at 94095, 94096, 94097 and 94098.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

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: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 96223
Nessus Name: FreeBSD : w3m -- multiple vulnerabilities (eafa3aec-211b-4dd4-9b8a-a664a3f0917a)
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: 🔍
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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: w3m 0.5.3-31

Timelineinfo

11/03/2016 🔍
11/18/2016 +15 days 🔍
11/18/2016 +0 days 🔍
12/11/2016 +23 days 🔍
12/12/2016 +1 days 🔍
12/12/2016 +0 days 🔍
01/01/2017 +20 days 🔍
01/03/2017 +2 days 🔍
10/05/2022 +2101 days 🔍

Sourcesinfo

Advisory: 26
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9428 (🔍)
SecurityFocus: 94407 - w3m Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/12/2016 09:36
Updated: 10/05/2022 17:39
Changes: 12/12/2016 09:36 (76), 06/25/2019 17:04 (6), 10/05/2022 17:39 (3)
Complete: 🔍

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