CVE-2002-0640

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 28.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2002-07-03 · updated 2026-06-16

Description

Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).

Affected products

OpenSSH: 1.2.2, 1.2.3, 2.1, 2.1.1, 2.2, 2.3 (+20)

References

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://marc.info/?l=bugtraq&m=102532054613894&w=2
http://www.cert.org/advisories/CA-2002-18.html
http://www.debian.org/security/2002/dsa-134
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
http://www.novell.com/linux/security/advisories/2002_024_openssh_txt.html

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