Получения информации о пользователе в OpenSSH + S/Key (information leakage)

Авторизация через S/Key происходит по разному, в зависимости от того, существует ли пользователь. Кроме того, можно получить менее значимую информацию...

OpenSSH UseLogin option allows remote execution of commands as root

Overview Versions of OpenSSH prior to 2.1.1 current circa June, 2000 allow a remote attacker to execute arbitrary commands with the privileges of sshd, typically root. Description OpenSSH is a free implementation of versions 1 and 2 of the SSH protocol. If sshd is configured with the UseLogin...

CVE-2001-1380

OpenSSH before 2.9.9, while using keypairs and multiple keys of different types in the /.ssh/authorizedkeys2 file, may not properly handle the "from" option associated with a key, which could allow remote attackers to login from unauthorized IP addresses...

PT-2001-1066 · Openssh +1 · Openssh-Askpass-Gnome +5

Name of the Vulnerable Software and Affected Versions: OpenSSH versions prior to 2.9.9 openssh-server version 2.9p2 openssh-clients version 2.9p2 openssh version 2.9p2 openssh-askpass-gnome version 2.9p2 openssh-askpass version 2.9p2 Description: The issue affects the confidentiality, integrity,...

OpenSSH 2.5.x - 2.9 Multiple Vulnerabilities

According to its banner, the remote host appears to be running OpenSSH version between 2.5.x and 2.9. Such versions reportedly contain multiple vulnerabilities : - sftp-server does not respect the 'command=' argument of keys in the authorizedkeys2 file. CVE-2001-0816 - sshd does not properly hand...

CVE-2001-1382

The "echo simulation" traffic analysis countermeasure in OpenSSH before 2.9.9p2 sends an additional echo packet after the password and carriage return is entered, which could allow remote attackers to determine that the countermeasure is being used...

Обход проверки адреса IP в OpenSSH (protection bypass)

При определенной последовательности ключей в йале конфигурации не устанавливаются отдельные опции конфигурации на доступ с данным ключем...

OpenSSH Security Advisory (adv.option)

Weakness in OpenSSH's source IP based access control for SSH protocol v2 public key authentication. 1. Systems affected: Versions of OpenSSH between 2.5.x and 2.9.x using the 'from=' key file option in combination with both RSA and DSA keys in /.ssh/authorizedkeys2. 2. Description: Depending on t...

PT-2001-2496 · Openssh +1 · Openssh +1

Name of the Vulnerable Software and Affected Versions: OpenSSH versions prior to 2.9.9p2 Description: The issue concerns the "echo simulation" traffic analysis countermeasure in OpenSSH. This countermeasure sends an additional echo packet after the password and carriage return is entered. As a...

Local vulnerability in libutil derived with FreeBSD 4.4-RC (and earlier)

Hello, OpenSSH derived with FreeBSD 4.4 and earlier doesn't drop privileges before messing with login class capability database. The most problematic is: if newcommand == NULL && !quietlogin && !options.uselogin fname = logingetcapstrlc, "copyright", NULL, NULL; if fname != NULL && f = fopenfname...

Проблемы в libutlis/OpenSSH/login (unauthorized access)

При входе клиента не сбрасываются права суперюзера при просмотре параметров задаваемых в пользовательском .loginconf, что позволяет прочитать любой системный файл...

CVE-2001-1029

libutil in OpenSSH on FreeBSD 4.4 and earlier does not drop privileges before verifying the capabilities for reading the copyright and welcome files, which allows local users to bypass the capabilities checks and read arbitrary files by specifying alternate copyright or welcome files...

PT-2001-2176 · Freebsd +1 · Openssh +2

Name of the Vulnerable Software and Affected Versions: OpenSSH on FreeBSD versions 4.4 and earlier Description: The issue allows local users to bypass capabilities checks and read arbitrary files by specifying alternate copyright or welcome files, due to libutil in OpenSSH not dropping privileges...

OpenSSH: sftp & bypassing keypair auth restrictions

OpenSSH: sftp-server & bypassing keypair auth restrictions Summary: If you 1 are using keypairs and /.ssh/authorizedkeys2 to enable remote execution of commands via OpenSSH's sshd and 2 have sshd configured to provide sftp service via the sftp-server subsystem, then clients who have access with...

Получение shell-доступа через OpenSSH (protection bypass)

Учетная запись имеющая ограничение на доступ может получить шелл используя проблемы в реализации подсистемы sftp...

CVE-2001-0361

CVE-2001-0361 affects SSH v1.5 implementations, notably OpenSSH up to 2.3.0, AppGate, and ssh-1 up to 1.2.31, when configured in certain ways. The issue enables a remote attacker to decrypt and/or alter traffic via a Bleichenbacher attack on PKCS#1 version 1.5. The connected PT security entries (...

FreeBSD 4.34.4 - Login Capabilities Privileged File Reading

FreeBSD 4.34.4 - Login Capabilities Privileged File Reading source: https://www.securityfocus.com/bid/3344/info FreeBSD is a freely available, open source implementation of the BSD UNIX Operating System. It is developed and maintained by the FreeBSD Project. It is possible for a user with access ...

FreeBSD 4.3/4.4 - Login Capabilities Privileged File Reading

source: https://www.securityfocus.com/bid/3344/info FreeBSD is a freely available, open source implementation of the BSD UNIX Operating System. It is developed and maintained by the FreeBSD Project. It is possible for a user with access to a system via SSH to gain access to privileged information...

Remote Code Execution (RCE)

Overview Affected versions of this package are vulnerable to Remote Code Execution RCE. The SSH protocols 1 and 2 aka SSH-2 as implemented in OpenSSH and other packages have various weaknesses which can allow a remote attacker to obtain the following information via sniffing: 1 password lengths o...

OpenSSH allows arbitrary file deletion via symlink redirection of temporary file

Overview Due to insecure handling of temporary files, some versions of sshd, an encrypted connection program, can delete any file named "cookies" accessible via the computer running sshd. Description sshd is the server software used to support ssh, a popular encryted connection program. Some...