5.9
MEDIUM
CVE-2016-6210
OpenSSH sshd Password Hashing Timing Vulnerability
Description

sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.

INFO

Published Date :

Feb. 13, 2017, 5:59 p.m.

Last Modified :

Nov. 21, 2024, 2:55 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.2
Public PoC/Exploit Available at Github

CVE-2016-6210 has a 23 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2016-6210 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 Openbsd openssh
: Total Affected Vendor : 1 | Products : 1
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-2016-6210.

URL Resource
http://seclists.org/fulldisclosure/2016/Jul/51 Mailing List Third Party Advisory
http://www.debian.org/security/2016/dsa-3626
http://www.securityfocus.com/bid/91812 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036319
https://access.redhat.com/errata/RHSA-2017:2029
https://access.redhat.com/errata/RHSA-2017:2563
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://security.gentoo.org/glsa/201612-18
https://security.netapp.com/advisory/ntap-20190206-0001/
https://www.exploit-db.com/exploits/40113/
https://www.exploit-db.com/exploits/40136/
https://www.openssh.com/txt/release-7.3 Release Notes Vendor Advisory
http://seclists.org/fulldisclosure/2016/Jul/51 Mailing List Third Party Advisory
http://www.debian.org/security/2016/dsa-3626
http://www.securityfocus.com/bid/91812 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036319
https://access.redhat.com/errata/RHSA-2017:2029
https://access.redhat.com/errata/RHSA-2017:2563
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://security.gentoo.org/glsa/201612-18
https://security.netapp.com/advisory/ntap-20190206-0001/
https://www.exploit-db.com/exploits/40113/
https://www.exploit-db.com/exploits/40136/
https://www.openssh.com/txt/release-7.3 Release Notes Vendor 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).

Profile Photo
blurryface18/Network-vulnerability-scanner

None

Python

Updated: 1 month, 2 weeks ago
1 stars 0 fork 0 watcher
Born at : Feb. 18, 2025, 1:50 p.m. This repo has been linked 2 different CVEs too.
Profile Photo
NeoOniX/5ATTACK

None

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : Jan. 30, 2025, 9:01 a.m. This repo has been linked 173 different CVEs too.
Profile Photo
krlabs/openssh-vulnerabilities

OpenSSH Vulnerabilities list

cve openssh vulnerabilities

Updated: 3 months ago
0 stars 0 fork 0 watcher
Born at : Dec. 4, 2024, 1:10 p.m. This repo has been linked 25 different CVEs too.
Profile Photo
edsonjt81/https-github.com-gotr00t0day-OpenSSH-Scanner

None

Python

Updated: 6 months ago
0 stars 0 fork 0 watcher
Born at : Oct. 3, 2024, 3:15 p.m. This repo has been linked 22 different CVEs too.
Profile Photo
ryanalieh/openSSH-scanner

bulk scanning tool for 21 different CVE's for OpenSSH

Python

Updated: 7 months, 1 week ago
1 stars 0 fork 0 watcher
Born at : Aug. 25, 2024, 6:28 a.m. This repo has been linked 22 different CVEs too.
Profile Photo
bigb0x/OpenSSH-Scanner

OpenSSH Vulnerabilities Scanner: Bulk Scanning Tool for 21 different OpenSSH CVEs.

Python

Updated: 2 months, 1 week ago
7 stars 5 fork 5 watcher
Born at : Aug. 24, 2024, 10:56 p.m. This repo has been linked 22 different CVEs too.
Profile Photo
bigb0x/SSH-Scanner

Bulk Scanning Tool for OpenSSH CVE-2024-6387, CVE-2024-6409, CVE-2006-5051, CVE-2008-4109, and 16 other CVEs.

Updated: 8 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : July 11, 2024, 11:56 a.m. This repo has been linked 22 different CVEs too.
Profile Photo
bigb0x/CVE-2024-6387

Bulk Scanning Tool for OpenSSH CVE-2024-6387, CVE-2006-5051 , CVE-2008-4109 and others.

openssh security-audit security-tools ssh ssh-server

Python

Updated: 3 months ago
27 stars 7 fork 7 watcher
Born at : July 1, 2024, 8:45 p.m. This repo has been linked 21 different CVEs too.
Profile Photo
sash3939/IS_Vulnerabilities_attacks

None

Updated: 10 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : May 6, 2024, 7:01 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
scmanjarrez/test

None

Lua Python Dockerfile

Updated: 1 year ago
0 stars 0 fork 0 watcher
Born at : April 1, 2024, 9:13 a.m. This repo has been linked 9 different CVEs too.
Profile Photo
samh4cks/CVE-2016-6210-OpenSSH-User-Enumeration

None

Python

Updated: 1 year, 7 months ago
1 stars 0 fork 0 watcher
Born at : Sept. 1, 2023, 8:43 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
bioly230/THM_Skynet

None

Updated: 1 year, 9 months ago
0 stars 0 fork 0 watcher
Born at : June 30, 2023, 2:41 p.m. This repo has been linked 78 different CVEs too.
Profile Photo
goomdan/CVE-2016-6210-exploit

Custom exploit written for enumerating usernames as per CVE-2016-6210

Python

Updated: 4 months ago
1 stars 1 fork 1 watcher
Born at : March 19, 2023, 7:16 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
lnick2023/nicenice

None

Updated: 2 years, 2 months ago
0 stars 0 fork 0 watcher
Born at : Jan. 11, 2023, 1:21 p.m. This repo has been linked 1044 different CVEs too.
Profile Photo
phx/cvescan

Easily scan for CVEs using nmap.

cve nmap portscanning shell shellscript automation

Shell

Updated: 4 months, 4 weeks ago
12 stars 3 fork 3 watcher
Born at : Jan. 13, 2022, 2:44 p.m. This repo has been linked 34 different CVEs too.

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

The following list is the news that have been mention CVE-2016-6210 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-6210 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2016/Jul/51
    Added Reference http://www.debian.org/security/2016/dsa-3626
    Added Reference http://www.securityfocus.com/bid/91812
    Added Reference http://www.securitytracker.com/id/1036319
    Added Reference https://access.redhat.com/errata/RHSA-2017:2029
    Added Reference https://access.redhat.com/errata/RHSA-2017:2563
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
    Added Reference https://security.gentoo.org/glsa/201612-18
    Added Reference https://security.netapp.com/advisory/ntap-20190206-0001/
    Added Reference https://www.exploit-db.com/exploits/40113/
    Added Reference https://www.exploit-db.com/exploits/40136/
    Added Reference https://www.openssh.com/txt/release-7.3
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Dec. 13, 2022

    Action Type Old Value New Value
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 07, 2019

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20190206-0001/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 05, 2018

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2017:2563 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2017:2029 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 04, 2017

    Action Type Old Value New Value
    Added Reference http://www.debian.org/security/2016/dsa-3626 [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 03, 2017

    Action Type Old Value New Value
    Added Reference https://www.exploit-db.com/exploits/40136/ [No Types Assigned]
    Added Reference https://www.exploit-db.com/exploits/40113/ [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 01, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1036319 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201612-18 [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 09, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:N/A:N)
    Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type http://seclists.org/fulldisclosure/2016/Jul/51 No Types Assigned http://seclists.org/fulldisclosure/2016/Jul/51 Mailing List, Third Party Advisory
    Changed Reference Type http://www.securityfocus.com/bid/91812 No Types Assigned http://www.securityfocus.com/bid/91812 Third Party Advisory, VDB Entry
    Changed Reference Type https://www.openssh.com/txt/release-7.3 No Types Assigned https://www.openssh.com/txt/release-7.3 Release Notes, Vendor Advisory
    Added CWE CWE-200
    Added CPE Configuration OR *cpe:2.3:a:openbsd:openssh:7.2:p2:*:*:*:*:*:* (and previous)
  • CVE Modified by [email protected]

    Feb. 15, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/91812 [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-2016-6210 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-6210 weaknesses.

CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-59: Session Credential Falsification through Prediction Session Credential Falsification through Prediction CAPEC-60: Reusing Session IDs (aka Session Replay) Reusing Session IDs (aka Session Replay) CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-116: Excavation Excavation CAPEC-169: Footprinting Footprinting CAPEC-224: Fingerprinting Fingerprinting CAPEC-285: ICMP Echo Request Ping ICMP Echo Request Ping CAPEC-287: TCP SYN Scan TCP SYN Scan CAPEC-290: Enumerate Mail Exchange (MX) Records Enumerate Mail Exchange (MX) Records CAPEC-291: DNS Zone Transfers DNS Zone Transfers CAPEC-292: Host Discovery Host Discovery CAPEC-293: Traceroute Route Enumeration Traceroute Route Enumeration CAPEC-294: ICMP Address Mask Request ICMP Address Mask Request CAPEC-295: Timestamp Request Timestamp Request CAPEC-296: ICMP Information Request ICMP Information Request CAPEC-297: TCP ACK Ping TCP ACK Ping CAPEC-298: UDP Ping UDP Ping CAPEC-299: TCP SYN Ping TCP SYN Ping CAPEC-300: Port Scanning Port Scanning CAPEC-301: TCP Connect Scan TCP Connect Scan CAPEC-302: TCP FIN Scan TCP FIN Scan CAPEC-303: TCP Xmas Scan TCP Xmas Scan CAPEC-304: TCP Null Scan TCP Null Scan CAPEC-305: TCP ACK Scan TCP ACK Scan CAPEC-306: TCP Window Scan TCP Window Scan CAPEC-307: TCP RPC Scan TCP RPC Scan CAPEC-308: UDP Scan UDP Scan CAPEC-309: Network Topology Mapping Network Topology Mapping CAPEC-310: Scanning for Vulnerable Software Scanning for Vulnerable Software CAPEC-312: Active OS Fingerprinting Active OS Fingerprinting CAPEC-313: Passive OS Fingerprinting Passive OS Fingerprinting CAPEC-317: IP ID Sequencing Probe IP ID Sequencing Probe CAPEC-318: IP 'ID' Echoed Byte-Order Probe IP 'ID' Echoed Byte-Order Probe CAPEC-319: IP (DF) 'Don't Fragment Bit' Echoing Probe IP (DF) 'Don't Fragment Bit' Echoing Probe CAPEC-320: TCP Timestamp Probe TCP Timestamp Probe CAPEC-321: TCP Sequence Number Probe TCP Sequence Number Probe CAPEC-322: TCP (ISN) Greatest Common Divisor Probe TCP (ISN) Greatest Common Divisor Probe CAPEC-323: TCP (ISN) Counter Rate Probe TCP (ISN) Counter Rate Probe CAPEC-324: TCP (ISN) Sequence Predictability Probe TCP (ISN) Sequence Predictability Probe CAPEC-325: TCP Congestion Control Flag (ECN) Probe TCP Congestion Control Flag (ECN) Probe CAPEC-326: TCP Initial Window Size Probe TCP Initial Window Size Probe CAPEC-327: TCP Options Probe TCP Options Probe CAPEC-328: TCP 'RST' Flag Checksum Probe TCP 'RST' Flag Checksum Probe CAPEC-329: ICMP Error Message Quoting Probe ICMP Error Message Quoting Probe CAPEC-330: ICMP Error Message Echoing Integrity Probe ICMP Error Message Echoing Integrity Probe CAPEC-472: Browser Fingerprinting Browser Fingerprinting CAPEC-497: File Discovery File Discovery CAPEC-508: Shoulder Surfing Shoulder Surfing CAPEC-573: Process Footprinting Process Footprinting CAPEC-574: Services Footprinting Services Footprinting CAPEC-575: Account Footprinting Account Footprinting CAPEC-576: Group Permission Footprinting Group Permission Footprinting CAPEC-577: Owner Footprinting Owner Footprinting CAPEC-616: Establish Rogue Location Establish Rogue Location CAPEC-643: Identify Shared Files/Directories on System Identify Shared Files/Directories on System CAPEC-646: Peripheral Footprinting Peripheral Footprinting CAPEC-651: Eavesdropping Eavesdropping
Exploit Prediction

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

92.49 }} 0.47%

score

0.99731

percentile

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