[Japanese]

JVNDB-2008-000023

Sony mylo COM-2 does not verify server SSL certificate

Overview

Sony mylo COM-2 contains a vulnerability where it does not verify the server certificate when connecting to a server via SSL/TLS.

Sony mylo COM-2, a mobile terminal equipped with a web browser and media palyer, contains a vulnerability where it does not verify the server certificate when connecting to a server via SSL/TLS.

Hiromitsu Takagi reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendor under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

Base Metrics: 4.3 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None

Affected Products


Sony Corporation
  • mylo COM-2 System Software prior to Ver.1.002 (Japan model)
  • mylo COM-2 System Software prior to Ver.1.002 (U.S. model)

Impact

Normally, when a client connects to a web server through a SSL/TLS connection, it would verify the server's certificate and notify the user if the cerificate is found to be invalid. mylo COM-2 does not verify the server certificate when connecting via SSL/TLS. As a result, the user would not recognize an unreliable certificate, and may be directed to phishing sites etc.
Solution

[Update the Software]
Update to the latest version according to the information provided by the vendor.
Vendor Information

Sony Corporation
  • Sony : mylo (Japanese)
CWE (What is CWE?)

  1. Improper Authentication(CWE-287) [NVD Evaluation]
CVE (What is CVE?)

  1. CVE-2008-1938
References

  1. JVN : JVN#76788395
  2. National Vulnerability Database (NVD) : CVE-2008-1938
  3. Secunia Advisory : SA29928
  4. SecurityFocus : 28905
  5. ISS X-Force Database : 41971
Revision History

[2008/05/21]
  Web page published