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CVE-2023-4255— W3m: out-of-bounds write in function checktype() in etc.c (incomplete fix for cve-2022-38223)

CVSS 5.5 · Medium EPSS 0.02% · P6
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I. Basic Information for CVE-2023-4255

Vulnerability Information
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Vulnerability Title
W3m: out-of-bounds write in function checktype() in etc.c (incomplete fix for cve-2022-38223)
Source: NVD (National Vulnerability Database)
Vulnerability Description
An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within the W3M application. This vulnerability is triggered by supplying a specially crafted HTML file to the w3m binary. Exploitation of this flaw could lead to application crashes, resulting in a denial of service condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
w3m 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
w3m是Tatsuya Kinoshita个人开发者的一种具有 WWW 功能的寻呼机。 W3M 存在安全漏洞，该漏洞源于etc.c 中 checkType() 函数的退格处理中发现了越界写入问题，可以通过向 w3m 二进制文件提供特制 HTML 文件触发，攻击者利用该漏洞可能会导致应用程序崩溃，从而导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
-w3m--
FedoraFedora--
FedoraExtra Packages for Enterprise Linux--

II. Public POCs for CVE-2023-4255

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III. Intelligence Information for CVE-2023-4255

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Same Patch Batch · n/a · 2023-12-21 · 21 CVEs total

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IV. Related Vulnerabilities

Same product: w3m
Same vendor: n/a
Same weakness: CWE-787

V. Comments for CVE-2023-4255

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