W3M
CVE-2023-38252
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK
1 technique across 1 tactic: Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A local attacker with access to the system could read data from memory outside the intended buffer boundaries. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
An out-of-bounds read flaw was found in w3m, in the Strnew_size function in Str.c. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. An out-of-bounds read flaw was found in w3m, in the Strnew_size function in Str.c. This issue may allow an attacker to cause a denial of service through a crafted HTML file. Affected products include: Tats W3M, Fedoraproject Extra Packages For Enterprise Linux, Fedoraproject Fedora, Redhat Enterprise Linux.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
An out-of-bounds read flaw was found in w3m, in the Strnew_size function in Str.c. This issue may allow an attacker to cause a denial of service through a crafted HTML file.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
There is an out-of-bounds write in checkType located in etc.c in w3m 0.5.3. Rated high severity (CVSS 7.8), this vulnera
w3m through 0.5.3 is prone to a NULL pointer dereference flaw in formUpdateBuffer in form.c. Rated high severity (CVSS 7
w3m through 0.5.3 is prone to an infinite recursion flaw in HTMLlineproc0 because the feed_table_block_tag function in t
An out-of-bounds write issue has been discovered in the backspace handling of the checkType() function in etc.c within t
An out-of-bounds read flaw was found in w3m, in the growbuf_to_Str function in indep.c. Rated medium severity (CVSS 5.5)
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Rated high severity (CVSS 8.8), this vulnerab
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Rated high severity (CVSS 8.8), this vulnerab
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Rated high severity (CVSS 8.8), this vulnerab
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Rated high severity (CVSS 8.8), this vulnerab
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Rated high severity (CVSS 8.8), this vulnerab
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Rated high severity (CVSS 8.8), this vulnerab
An issue was discovered in the Tatsuya Kinoshita w3m fork before 0.5.3-31. Rated high severity (CVSS 8.8), this vulnerab
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