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CVE-2002-0083: OpenSSH 2.0‑3.0.2 can let attackers gain privileges

CVE-2002-0083 · published 24 years ago

Summary

Versions of OpenSSH from 2.0 through 3.0.2 contain an off‑by‑one mistake that could let a local user or a malicious remote server increase their access rights on the system. This could lead to unauthorized actions or data exposure. Apply the latest security updates or upgrade to a newer OpenSSH release as soon as possible.

What to do

Update openbsd openssh to version 3.1 or later.

Affected software

Vendor	Product	Affected versions
immunix	immunix	7.0 `cpe:2.3:a:immunix:immunix:7.0:::::::*`
mandrakesoft	mandrake_single_network_firewall	7.2 `cpe:2.3:a:mandrakesoft:mandrake_single_network_firewall:7.2:::::::*`
openbsd	openssh	>= 2.0, < 3.1 `cpe:2.3:a:openbsd:openssh::::::::`
openpkg	openpkg	1.0 `cpe:2.3:a:openpkg:openpkg:1.0:::::::*`
conectiva	linux	5.0 5.1 6.0 7.0 ecommerce graficas `cpe:2.3:o:conectiva:linux:5.0:::::::*`
engardelinux	secure_linux	1.0.1 `cpe:2.3:o:engardelinux:secure_linux:1.0.1:::::::*`
mandrakesoft	mandrake_linux	7.1 7.2 8.0 8.1 `cpe:2.3:o:mandrakesoft:mandrake_linux:7.1:::::::*`
mandrakesoft	mandrake_linux_corporate_server	1.0.1 `cpe:2.3:o:mandrakesoft:mandrake_linux_corporate_server:1.0.1:::::::*`
redhat	linux	7.0 7.1 7.2 `cpe:2.3:o:redhat:linux:7.0:::::::*`
suse	suse_linux	6.4 7.0 7.1 7.2 7.3 `cpe:2.3:o:suse:suse_linux:6.4::i386:::::`
trustix	secure_linux	1.1 1.2 1.5 `cpe:2.3:o:trustix:secure_linux:1.1:::::::*`

Original advisory text

Off-by-one error in the channel code of OpenSSH 2.0 through 3.0.2 allows local users or remote malicious servers to gain privileges.

References

http://archives.neohapsis.com/archives/bugtraq/2002-03/0108.html Broken Link
http://archives.neohapsis.com/archives/vulnwatch/2002-q1/0060.html Broken Link
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000467 Broken Link
http://marc.info/?l=bugtraq&m=101552065005254&w=2 Mailing List
http://marc.info/?l=bugtraq&m=101553908201861&w=2 Mailing List
http://marc.info/?l=bugtraq&m=101561384821761&w=2 Mailing List
http://marc.info/?l=bugtraq&m=101586991827622&w=2 Mailing List Patch
http://online.securityfocus.com/advisories/3960 Broken Link Third Party Advisory VDB Entry
http://online.securityfocus.com/archive/1/264657 Broken Link Third Party Advisory VDB Entry
http://www.calderasystems.com/support/security/advisories/CSSA-2002-012.0.txt Broken Link
http://www.debian.org/security/2002/dsa-119 Broken Link Vendor Advisory
http://www.iss.net/security_center/static/8383.php Broken Link
http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-019.php Broken Link
http://www.linuxsecurity.com/advisories/other_advisory-1937.html Broken Link Patch Vendor Advisory
http://www.novell.com/linux/security/advisories/2002_009_openssh_txt.html Broken Link
http://www.openbsd.org/advisories/ssh_channelalloc.txt Vendor Advisory
http://www.osvdb.org/730 Broken Link
http://www.redhat.com/support/errata/RHSA-2002-043.html Broken Link
http://www.securityfocus.com/bid/4241 Broken Link Third Party Advisory VDB Entry

Fix within

Internet-facing 3 days

Internal 60 days

Not known to be exploited
Can be exploited automatically (estimated)
Gives an attacker full control (estimated)

Severity

9.8 Critical

Exploitation

15% chance of attack within 30 days

Type

CWE-193Off-by-one Error

Timeline

Published15 Mar 2002

Updated22 Oct 2026

First seen29 Sep 2026

Sources

CVE-2002-0083 · NVD

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