Test ID:	1.3.6.1.4.1.25623.1.0.802407
Category:	Buffer overflow
Title:	OpenSSH 'sshd' Challenge Response Authentication Buffer Overflow Vulnerability
Summary:	OpenSSH sshd with ChallengeResponseAuthentication enabled is prone to a buffer overflow vulnerability.
Description:	Summary: OpenSSH sshd with ChallengeResponseAuthentication enabled is prone to a buffer overflow vulnerability. Vulnerability Insight: The flaw is due to an error in handling a large number of responses during challenge response authentication when using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt). Vulnerability Impact: Successful exploitation could allows remote attackers to execute arbitrary code and gain escalated privileges. Affected Software/OS: OpenSSH versions 2.3.1 to 3.3. Solution: Upgrade to OpenSSH version 3.4 or later. CVSS Score: 10.0 CVSS Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2002-0640 BugTraq ID: 5093 http://www.securityfocus.com/bid/5093 Bugtraq: 20020626 OpenSSH Security Advisory (adv.iss) (Google Search) http://marc.info/?l=bugtraq&m=102514371522793&w=2 Bugtraq: 20020626 Revised OpenSSH Security Advisory (adv.iss) (Google Search) http://marc.info/?l=bugtraq&m=102514631524575&w=2 Bugtraq: 20020627 How to reproduce OpenSSH Overflow. (Google Search) http://marc.info/?l=bugtraq&m=102521542826833&w=2 Bugtraq: 20020628 Sun statement on the OpenSSH Remote Challenge Vulnerability (Google Search) http://marc.info/?l=bugtraq&m=102532054613894&w=2 Caldera Security Advisory: CSSA-2002-030.0 ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-030.0.txt http://www.cert.org/advisories/CA-2002-18.html CERT/CC vulnerability note: VU#369347 http://www.kb.cert.org/vuls/id/369347 Conectiva Linux advisory: CLA-2002:502 http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000502 Debian Security Information: DSA-134 (Google Search) http://www.debian.org/security/2002/dsa-134 En Garde Linux Advisory: ESA-20020702-016 http://www.linuxsecurity.com/advisories/other_advisory-2177.html HPdes Security Advisory: HPSBUX0206-195 http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX0206-195 http://www.mandrakesoft.com/security/advisories?name=MDKSA-2002:040 http://www.osvdb.org/839 http://www.redhat.com/support/errata/RHSA-2002-127.html http://www.redhat.com/support/errata/RHSA-2002-131.html SuSE Security Announcement: SuSE-SA:2002:024 (Google Search) http://www.novell.com/linux/security/advisories/2002_024_openssh_txt.html
Copyright	Copyright (C) 2011 Greenbone AG

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