Debian DLA-2860-1 : paramiko - LTS security update

critical Nessus Plugin ID 156334

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2860 advisory.

- Paramiko version 2.4.1, 2.3.2, 2.2.3, 2.1.5, 2.0.8, 1.18.5, 1.17.6 contains a Incorrect Access Control vulnerability in SSH server that can result in RCE. This attack appear to be exploitable via network connectivity. (CVE-2018-1000805)

- transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step. (CVE-2018-7750)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the paramiko packages.

For Debian 9 stretch, these problems have been fixed in version 2.0.0-1+deb9u1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892859

https://security-tracker.debian.org/tracker/source-package/paramiko

https://www.debian.org/lts/security/2021/dla-2860

https://security-tracker.debian.org/tracker/CVE-2018-1000805

https://security-tracker.debian.org/tracker/CVE-2018-7750

https://packages.debian.org/source/stretch/paramiko

Plugin Details

Severity: Critical

ID: 156334

File Name: debian_DLA-2860.nasl

Version: 1.3

Type: local

Agent: unix

Published: 12/28/2021

Updated: 1/20/2022

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

Temporal Vector: E:POC/RL:OF/RC:C

CVSS Score Source: CVE-2018-7750

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:paramiko-doc, p-cpe:/a:debian:debian_linux:python-paramiko, p-cpe:/a:debian:debian_linux:python3-paramiko, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/28/2021

Vulnerability Publication Date: 3/13/2018

Reference Information

CVE: CVE-2018-7750, CVE-2018-1000805