CVE-2016-20013
Openwall Phasing out Hash Function Efficiency
Description
sha256crypt and sha512crypt through 0.6 allow attackers to cause a denial of service (CPU consumption) because the algorithm's runtime is proportional to the square of the length of the password.
INFO
Published Date :
Feb. 19, 2022, 5:15 a.m.
Last Modified :
Nov. 21, 2024, 2:47 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2016-20013 has a 8 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-2016-20013
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.
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-2016-20013.
| URL | Resource |
|---|---|
| https://akkadia.org/drepper/SHA-crypt.txt | Exploit Third Party Advisory |
| https://pthree.org/2018/05/23/do-not-use-sha256crypt-sha512crypt-theyre-dangerous/ | Exploit Third Party Advisory |
| https://twitter.com/solardiz/status/795601240151457793 | Third Party Advisory |
| https://akkadia.org/drepper/SHA-crypt.txt | Exploit Third Party Advisory |
| https://pthree.org/2018/05/23/do-not-use-sha256crypt-sha512crypt-theyre-dangerous/ | Exploit Third Party Advisory |
| https://twitter.com/solardiz/status/795601240151457793 | 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).
github runner
Dockerfile Shell
Generate Software Bill of Materials (SBOM) from virtual machine disk images, without booting the VM.
Python
the repository for aws-spring-boot-api project
Simple tool for scanning container images for CVE's
Shell
Combining the best - Canonical's Chisel with consumable SBOMs!
Dockerfile Makefile Python Go
Ubuntu container with GMT timezone, GB locale and additional tools preinstalled.
Dockerfile Shell
Toolkit for k8s administrators/developers.
Dockerfile Shell
Unifi Controller (DB included)
Dockerfile Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-20013 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-20013 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 https://akkadia.org/drepper/SHA-crypt.txt Added Reference https://pthree.org/2018/05/23/do-not-use-sha256crypt-sha512crypt-theyre-dangerous/ Added Reference https://twitter.com/solardiz/status/795601240151457793 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Mar. 03, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:sha256crypt_project:sha256crypt:*:*:*:*:*:*:*:* versions up to (including) 0.6 *cpe:2.3:a:sha512crypt_project:sha2512crypt:*:*:*:*:*:*:*:* versions up to (including) 0.6 OR *cpe:2.3:a:sha256crypt_project:sha256crypt:*:*:*:*:*:*:*:* versions up to (including) 0.6 *cpe:2.3:a:sha512crypt_project:sha512crypt:*:*:*:*:*:*:*:* versions up to (including) 0.6 -
Initial Analysis by [email protected]
Mar. 01, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://akkadia.org/drepper/SHA-crypt.txt No Types Assigned https://akkadia.org/drepper/SHA-crypt.txt Exploit, Third Party Advisory Changed Reference Type https://pthree.org/2018/05/23/do-not-use-sha256crypt-sha512crypt-theyre-dangerous/ No Types Assigned https://pthree.org/2018/05/23/do-not-use-sha256crypt-sha512crypt-theyre-dangerous/ Exploit, Third Party Advisory Changed Reference Type https://twitter.com/solardiz/status/795601240151457793 No Types Assigned https://twitter.com/solardiz/status/795601240151457793 Third Party Advisory Added CWE NIST CWE-770 Added CPE Configuration OR *cpe:2.3:a:sha256crypt_project:sha256crypt:*:*:*:*:*:*:*:* versions up to (including) 0.6 *cpe:2.3:a:sha512crypt_project:sha2512crypt:*:*:*:*:*:*:*:* versions up to (including) 0.6
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-20013 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-2016-20013
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.19 }} -0.10%
score
0.41598
percentile