Integer overflow in Openbsd Openssh

CVE-2002-0639

Integer overflow in sshd in OpenSSH 2.9.9 through 3.3 allows remote attackers to execute arbitrary code during challenge response authentication (ChallengeResponseAuthentication) when OpenSSH is using SKEY or BSD_AUTH authentication.

Vulnerability class: Integer Overflow

EPSS: 0.184 (96.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

  • cve@mitre.org (vendor-advisory, Broken Link, x_refsource_DEBIAN)
  • cve@mitre.org (vdb-entry, Broken Link, x_refsource_XF)
  • cve@mitre.org (mailing-list, x_refsource_BUGTRAQ, Broken Link)
  • cve@mitre.org (mailing-list, Exploit, x_refsource_BUGTRAQ, Mailing List)
  • cve@mitre.org (x_refsource_OSVDB, vdb-entry, Broken Link)
  • cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_CERT, third-party-advisory)
  • cve@mitre.org (mailing-list, Exploit, x_refsource_BUGTRAQ, Mailing List)
  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
  • cve@mitre.org (vendor-advisory, x_refsource_ENGARDE, Broken Link)
  • cve@mitre.org (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2002-0639?
CVE-2002-0639 is a critical-severity vulnerability in Openbsd Openssh, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2002-07-03.
How severe is CVE-2002-0639?
Critical severity. CVSS v3 base score is 9.8 out of 10.