Vulnerabilities > CVE-2000-0525 - Unspecified vulnerability in Openbsd Openssh 1.2/1.2.3/2.1

047910
CVSS 10.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
openbsd
critical
nessus

Summary

OpenSSH does not properly drop privileges when the UseLogin option is enabled, which allows local users to execute arbitrary commands by providing the command to the ssh daemon.

Vulnerable Configurations

Part Description Count
Application
Openbsd
3

Nessus

  • NASL familyMisc.
    NASL idOPENSSH_USELOGIN.NASL
    descriptionAccording to its banner, the remote host appears to be running OpenSSH version older than 2.1.1. Such versions are reportedly affected by a local privilege esclation vulnerability. If the UseLogin option is enabled, then sshd does not switch to the uid of the user logging in. Instead, sshd relies on login(1) to do the job. However, if the user specifies a command for remote execution, login(1) cannot be used and sshd fails to set the correct user id, so the command is run with the same privilege as sshd (usually root privileges).
    last seen2020-06-01
    modified2020-06-02
    plugin id10439
    published2000-06-10
    reporterThis script is Copyright (C) 2000-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/10439
    titleOpenSSH < 2.1.1 UseLogin Local Privilege Escalation
  • NASL familyMisc.
    NASL idSUNSSH_PLAINTEXT_RECOVERY.NASL
    descriptionThe version of SunSSH running on the remote host has an information disclosure vulnerability. A design flaw in the SSH specification could allow a man-in-the-middle attacker to recover up to 32 bits of plaintext from an SSH-protected connection in the standard configuration. An attacker could exploit this to gain access to sensitive information. Note that this version of SunSSH is also prone to several additional issues but Nessus did not test for them.
    last seen2020-06-01
    modified2020-06-02
    plugin id55992
    published2011-08-29
    reporterThis script is Copyright (C) 2011-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/55992
    titleSunSSH < 1.1.1 / 1.3 CBC Plaintext Disclosure