CVE-2002-0639

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 18.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2002-07-03 · updated 2026-06-16
Weakness: CWE-190

Description

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.

Affected products

OpenSSH: from 2.9.9 through 3.3

References

http://archives.neohapsis.com/archives/bugtraq/2002-06/0335.html
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000502
http://marc.info/?l=bugtraq&m=102514371522793&w=2
http://marc.info/?l=bugtraq&m=102514631524575&w=2
http://marc.info/?l=bugtraq&m=102521542826833&w=2
http://www.cert.org/advisories/CA-2002-18.html
http://www.debian.org/security/2002/dsa-134
http://www.iss.net/security_center/static/9169.php
http://www.kb.cert.org/vuls/id/369347
http://www.linuxsecurity.com/advisories/other_advisory-2177.html
http://www.mandrakesoft.com/security/advisories?name=MDKSA-2002:040

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