CVE-2002-0639

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Summary

CVECVE-2002-0639
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2002-07-03 04:00:00 UTC
Updated2025-04-03 01:03:51 UTC
DescriptionInteger 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.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-190 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary10AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openbsd Openssh All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Neohapsis Archives - Bugtraq - [OpenPKG-SA-2002.005] OpenPKG Security Advisory (openssh) - From openpkgopenpkg.org af854a3a-2127-422b-91ae-364da2661108 archives.neohapsis.com Broken Link
'How to reproduce OpenSSH Overflow.' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Exploit, Mailing List
www.osvdb.org/6245 af854a3a-2127-422b-91ae-364da2661108 www.osvdb.org Broken Link
A͌̎̊̆͑̈́͋̏̕̕nytime na Twitterze: "There are a lot of redactions here, but it looks like the focus here might have been an exploit that lead also to the following OpenSSH vuln: https://t.co/gNShzS0M3T" af854a3a-2127-422b-91ae-364da2661108 twitter.com Broken Link
Debian -- Security Information -- DSA-134-4 ssh af854a3a-2127-422b-91ae-364da2661108 www.debian.org Broken Link
ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-030.0.txt af854a3a-2127-422b-91ae-364da2661108 ftp.caldera.com Broken Link
CERT Advisory CA-2002-18 OpenSSH Vulnerabilities in Challenge Response Handling af854a3a-2127-422b-91ae-364da2661108 www.cert.org Third Party Advisory, US Government Resource
OpenSSH Challenge-Response Buffer Overflow Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Broken Link, Third Party Advisory, VDB Entry
Home - Conectiva af854a3a-2127-422b-91ae-364da2661108 distro.conectiva.com.br Broken Link
LinuxSecurity.com: EnGarde: OpenSSH vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.linuxsecurity.com Broken Link
Mandrakesoft Security Advisories af854a3a-2127-422b-91ae-364da2661108 www.mandrakesoft.com Broken Link
www1.itrc.hp.com/service/cki/docDisplay.do af854a3a-2127-422b-91ae-364da2661108 www1.itrc.hp.com Broken Link
ISS X-Force Database: openssh-challenge-response-bo (9169): OpenSSH "Challenge-Response" authentication buffer overflow af854a3a-2127-422b-91ae-364da2661108 www.iss.net Broken Link
advise123 af854a3a-2127-422b-91ae-364da2661108 web.archive.org Third Party Advisory
CERT/CC Vulnerability Note VU#369347 af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org Third Party Advisory, US Government Resource
'OpenSSH Security Advisory (adv.iss)' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Exploit, Mailing List
'Revised OpenSSH Security Advisory (adv.iss)' - MARC af854a3a-2127-422b-91ae-364da2661108 marc.info Exploit, Mailing List
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

OrganizationPublishedContributorStatement
Red Hat2008-05-15Mark J CoxNot vulnerable. This issue did not affect the versions of OpenSSH as shipped with Red Hat Enterprise Linux 3 or later. This issue did not affect the OpenSSL packages as shipped with Red Hat Enterprise Linux 2.1 as they were not compiled with S/Key or BSD_AUTH support. The upstream patch for this issue and CVE-2002-0640 was included in an errata so that users recompiling OpenSSL with support for those authentication methods would also be protected: https://rhn.redhat.com/errata/RHSA-2002-131.html

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