7.5
HIGH
CVE-2017-2659
Dropbear Username Validation Leak
Description

It was found that dropbear before version 2013.59 with GSSAPI leaks whether given username is valid or invalid. When an invalid username is given, the GSSAPI authentication failure was incorrectly counted towards the maximum allowed number of password attempts.

INFO

Published Date :

March 21, 2019, 3:59 p.m.

Last Modified :

Oct. 9, 2019, 11:27 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2017-2659 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 Dropbear_ssh_project dropbear_ssh
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-2017-2659.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2659 Issue Tracking Patch Third Party Advisory
https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a#l1.86 Patch Third Party Advisory

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-2017-2659 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-2659 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]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    Added CWE Red Hat, Inc. CWE-209
  • Initial Analysis by [email protected]

    Mar. 22, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2659 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2659 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a#l1.86 No Types Assigned https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a#l1.86 Patch, Third Party Advisory
    Added CWE CWE-287
    Added CPE Configuration OR *cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:* versions up to (excluding) 2013.59
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-2017-2659 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.

0.14 }} 0.00%

score

0.49639

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability