9.8
CRITICAL
CVE-2018-7749
AsyncSSH SSH Authentication Bypass
Description

The SSH server implementation of AsyncSSH before 1.12.1 does not properly check whether authentication is completed before processing other requests. A customized SSH client can simply skip the authentication step.

INFO

Published Date :

March 12, 2018, 7:29 p.m.

Last Modified :

Nov. 7, 2023, 3:01 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2018-7749 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Asyncssh_project asyncssh
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-7749.

URL Resource
https://github.com/ronf/asyncssh/commit/c161e26cdc0d41b745b63d9f17b437f073bf7ba4 Third Party Advisory
https://groups.google.com/forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-7749 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-7749 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://groups.google.com/forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ [No types assigned]
    Removed Reference MITRE https://groups.google.com/forum/#!msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ
  • Modified Analysis by [email protected]

    Mar. 04, 2019

    Action Type Old Value New Value
    Changed Reference Type https://groups.google.com/forum/#!msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ No Types Assigned https://groups.google.com/forum/#!msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ Vendor Advisory
  • CVE Modified by [email protected]

    Aug. 13, 2018

    Action Type Old Value New Value
    Removed Reference https://groups.google.com/forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ [Mailing List, Third Party Advisory]
    Added Reference https://groups.google.com/forum/#!msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 09, 2018

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://groups.google.com/forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ No Types Assigned https://groups.google.com/forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ Mailing List, Third Party Advisory
    Changed Reference Type https://github.com/ronf/asyncssh/commit/c161e26cdc0d41b745b63d9f17b437f073bf7ba4 No Types Assigned https://github.com/ronf/asyncssh/commit/c161e26cdc0d41b745b63d9f17b437f073bf7ba4 Third Party Advisory
    Added CWE CWE-287
    Added CPE Configuration OR *cpe:2.3:a:asyncssh_project:asyncssh:*:*:*:*:*:*:*:* versions up to (excluding) 1.12.1
  • CVE Modified by [email protected]

    Mar. 15, 2018

    Action Type Old Value New Value
    Added Reference https://groups.google.com/forum/#%21msg/asyncssh-announce/57_5O7kiHSA/8BXZ_hxHAQAJ [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-7749 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.34 }} -0.14%

score

0.67469

percentile

CVSS30 - Vulnerability Scoring System
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