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Vulnerability details: VCID-3vk4-zvpq-7kgx
Vulnerability ID VCID-3vk4-zvpq-7kgx
Aliases CVE-2017-2659
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-287 Improper Authentication
System Score Found at
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
epss 0.00275 https://api.first.org/data/v1/epss?cve=CVE-2017-2659
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2017-2659
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-2659
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-2659
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2659
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2659
https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a#l1.86
cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*
CVE-2017-2659 https://nvd.nist.gov/vuln/detail/CVE-2017-2659
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-2659
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-2659
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.50681
EPSS Score 0.00275
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T11:59:06.971143+00:00 EPSS Importer Import https://epss.cyentia.com/epss_scores-current.csv.gz 37.0.0