CVE-2016-6515
OpenSSH Password Length DoS Vulnerability
Description
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.
INFO
Published Date :
Aug. 7, 2016, 9:59 p.m.
Last Modified :
Nov. 7, 2023, 2:34 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2016-6515 has a 19 public PoC/Exploit
available at Github.
Go to the Public Exploits
tab to see the list.
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-2016-6515
.
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).
None
Lua Python Dockerfile
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Shell
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Shell
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Shell
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TOP All bugbounty pentesting CVE-2023- POC Exp RCE example payload Things
bugbounty cve exp exploit payload poc rce vulnerability
Shell
None
Lua Python
Easily scan for CVEs using nmap.
cve nmap portscanning shell shellscript automation
Shell
A proof of concept for CVE-2016-6515
C++
Nmap script that scans for probable vulnerabilities based on services discovered in open ports.
nmap nmap-script nmap-scan-script exploit-db nmap-scan metasploit vulnerability-scanners security-scanner vulnerability-detection vulnerability nsescript nmap-scripts penetration-testing vulnerability-scanning vulnerability-identification vulnerability-databases exploit security security-audit nse
Lua Python Dockerfile
This is a boot2root VM and is a continuation of the Basic Pentesting series. This series is designed to help newcomers to penetration testing develop pentesting skills and have fun exploring part of the offensive side of security. VirtualBox is the recommended platform for this challenge (though it should also work with VMware -- however, I haven’t tested that). This VM is a moderate step up in difficulty from the first entry in this series. If you’ve solved the first entry and have tried a few other beginner-oriented challenges, this VM should be a good next step. Once again, this challenge contains multiple initial exploitation vectors and privilege escalation vulnerabilities. Your goal is to remotely attack the VM, gain root privileges, and read the flag located at /root/flag.txt. Once you’ve finished, try to find other vectors you might have missed! If you’d like to send me a link to your writeup, enjoyed the VM or have questions or feedback, feel free to contact me at: [email protected] If you finished the VM, please also consider posting a writeup! Writeups help you internalize what you worked on and help anyone else who might be struggling or wants to see someone else’s process. There were lots of wonderful writeups for Basic Pentesting: 1, and I look forward to reading the writeups for this challenge.
Automatic monitor github cve using Github Actions
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-6515
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-6515
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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/ -
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]
Sep. 14, 2021
Action Type Old Value New Value Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf [No Types Assigned] -
CVE Modified by [email protected]
Sep. 11, 2018
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html [No Types Assigned] -
CVE Modified by [email protected]
May. 10, 2018
Action Type Old Value New Value Added Reference https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us [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-2017:2029 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 02, 2017
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20171130-0003/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 21, 2017
Action Type Old Value New Value Added Reference https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc [No Types Assigned] -
CVE Modified by [email protected]
Oct. 20, 2017
Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html [No Types Assigned] -
CVE Modified by [email protected]
Sep. 01, 2017
Action Type Old Value New Value Added Reference http://www.securitytracker.com/id/1036487 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 23, 2016
Action Type Old Value New Value Added Reference https://www.exploit-db.com/exploits/40888/ [No Types Assigned] Added Reference http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/92212 [No Types Assigned] -
Modified Analysis by [email protected]
Aug. 23, 2016
Action Type Old Value New Value Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:openbsd:openssh:7.2:p2:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:a:openbsd:openssh:7.2:p2:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:* Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/ Third Party Advisory -
CVE Modified by [email protected]
Aug. 23, 2016
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/ -
Modified Analysis by [email protected]
Aug. 10, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:a:openbsd:openssh:7.2:p2:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97 No Types Assigned https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97 Issue Tracking, Patch Changed Reference Type http://openwall.com/lists/oss-security/2016/08/01/2 No Types Assigned http://openwall.com/lists/oss-security/2016/08/01/2 Third Party Advisory, VDB Entry Added CWE CWE-20 -
Initial Analysis by [email protected]
Aug. 10, 2016
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-6515
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-2016-6515
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
4.50 }} -12.10%
score
0.92577
percentile