// For flags

CVE-2010-2074

w3m: doesn't handle NULL in Common Name properly

Severity Score

5.9
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

istream.c in w3m 0.5.2 and possibly other versions, when ssl_verify_server is enabled, does not properly handle a '\0' character in a domain name in the (1) subject's Common Name or (2) Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

istream.c en w3m v0.5.2 y posiblemente otras versiones, cuando ssl_verify_server está activado, no maneja adecuadamente el carácter '\0' en un nombre de dominio en el (1) subject's Common Name o (2) Subject Alternative Name field de un certificado X.509, lo que permite a atacantes en el medio (Man-in-the-middle) suplantar a servidores SSL a través de certificados manipulados enviados por una Autoridad de Certificación legítima. Tema relacionado con el CVE-2009-2408.

Ludwig Nussel discovered w3m does not properly handle SSL/TLS certificates with NULL characters in the certificate name. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
Attack Vector
Network
Attack Complexity
High
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2010-05-25 CVE Reserved
  • 2010-06-16 CVE Published
  • 2024-08-07 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
W3m
Search vendor "W3m"
 W3m
Search vendor "W3m" for product "W3m"
 0.5.2
Search vendor "W3m" for product "W3m" and version "0.5.2"
-
Affected