checkpw vulnerable to denial-of-service (DoS)


checkpw is a password authentication program. checkpw contains a denial-of-service (DoS) vulnerability due to a flaw in processing account names (CWE-400).

Hiroya Ito of GMO Pepabo, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 5.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Partial
Affected Products

OHIRA, Shinya
  • checkpw -1.02 and earlier


A remote attacker may be able to cause a denial-of-service (DoS).

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

OHIRA, Shinya
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2015-0885

  1. JVN : JVN#34790526
  2. National Vulnerability Database (NVD) : CVE-2015-0885
Revision History

  • [2015/02/27]
      Web page was published
      References : Content was added