7.8
HIGH
CVE-2020-16156
"CPAN Signature Verification Bypass"
Description

CPAN 2.28 allows Signature Verification Bypass.

INFO

Published Date :

Dec. 13, 2021, 6:15 p.m.

Last Modified :

Nov. 7, 2023, 3:18 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2020-16156 has a 14 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-2020-16156 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 Fedoraproject fedora
1 Perl comprehensive_perl_archive_network
: Total Affected Vendor : 2 | Products : 2
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-2020-16156.

URL Resource
http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html Exploit Third Party Advisory
https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/ Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/
https://metacpan.org/pod/distribution/CPAN/scripts/cpan Product 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).

Profile Photo
Srinu-rj/spring-food-app

None

Dockerfile Roff Java

Updated: 1 month, 1 week ago
0 stars 0 fork 0 watcher
Born at : Oct. 7, 2024, 8:52 a.m. This repo has been linked 127 different CVEs too.
Profile Photo
mmbazm/secure_license_server

None

Dockerfile Python

Updated: 1 month, 1 week ago
0 stars 0 fork 0 watcher
Born at : Oct. 5, 2024, 4:56 p.m. This repo has been linked 67 different CVEs too.
Profile Photo
raylivesun/ploa

ANALYSIS OF THE PROPOSAL PREPARATION PROCESS OF ANNUAL BUDGET LAW IN A PUBLIC INSTITUTION FEDERAL HIGHER EDUCATION

Shell Perl Raku Makefile C++

Updated: 7 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : April 11, 2024, 6:19 a.m. This repo has been linked 5 different CVEs too.
Profile Photo
raylivesun/pldo

Optimal Control of Evolution Differential Inclusions with Polynomial Linear Differential Operators

R Pascal Perl HTML

Updated: 6 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : April 9, 2024, 10:41 p.m. This repo has been linked 5 different CVEs too.
Profile Photo
fokypoky/places-list

None

asp-net-core csharp docker dockerfile javascript react webapi docker-compose

C# Dockerfile HTML JavaScript CSS

Updated: 7 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Feb. 22, 2024, 6:42 p.m. This repo has been linked 383 different CVEs too.
Profile Photo
L-ivan7/-.-DevSec_Docker

None

HTML

Updated: 10 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Jan. 8, 2024, 4:23 p.m. This repo has been linked 18 different CVEs too.
Profile Photo
1g-v/DevSec_Docker_lab

None

HTML

Updated: 1 year, 6 months ago
0 stars 0 fork 0 watcher
Born at : April 21, 2023, 12:23 p.m. This repo has been linked 18 different CVEs too.
Profile Photo
vulnersCom/vulners-sbom-parser

None

Python

Updated: 5 months, 2 weeks ago
2 stars 3 fork 3 watcher
Born at : Dec. 12, 2022, 1:15 p.m. This repo has been linked 8 different CVEs too.
Profile Photo
cdupuis/image-api

None

TypeScript

Updated: 1 year, 11 months ago
0 stars 0 fork 0 watcher
Born at : Dec. 6, 2022, 12:43 p.m. This repo has been linked 43 different CVEs too.
Profile Photo
adegoodyer/ubuntu

Ubuntu container with GMT timezone, GB locale and additional tools preinstalled.

Dockerfile Shell

Updated: 2 years, 1 month ago
0 stars 0 fork 0 watcher
Born at : Oct. 13, 2022, 12:30 p.m. This repo has been linked 14 different CVEs too.
Profile Photo
flexiondotorg/CNCF-02

CNCF Live: Complexity vs Size vs Security

Python Shell

Updated: 1 year ago
1 stars 0 fork 0 watcher
Born at : May 25, 2022, 2:38 p.m. This repo has been linked 12 different CVEs too.
Profile Photo
akiraabe/myapp-container-jaxrs

None

Java Shell

Updated: 2 years, 8 months ago
0 stars 0 fork 0 watcher
Born at : March 8, 2022, 11:16 a.m. This repo has been linked 25 different CVEs too.
Profile Photo
nedenwalker/spring-boot-app-using-gradle

None

Java

Updated: 2 years, 11 months ago
0 stars 1 fork 1 watcher
Born at : Dec. 14, 2021, 4:38 p.m. This repo has been linked 26 different CVEs too.
Profile Photo
nedenwalker/spring-boot-app-with-log4j-vuln

None

Java

Updated: 2 years, 11 months ago
0 stars 0 fork 0 watcher
Born at : Dec. 13, 2021, 7 p.m. This repo has been linked 26 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-2020-16156 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-16156 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/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/
  • Modified Analysis by [email protected]

    Apr. 01, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 12, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/SZ32AJIV4RHJMLWLU5QULGKMMIHYOMDC/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/SD6RYOJII7HRJ6WVORFNVTYNOFY5JDXN/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Dec. 17, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html No Types Assigned http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html Exploit, Third Party Advisory
    Changed Reference Type https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/ No Types Assigned https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/ Exploit, Third Party Advisory
    Changed Reference Type https://metacpan.org/pod/distribution/CPAN/scripts/cpan No Types Assigned https://metacpan.org/pod/distribution/CPAN/scripts/cpan Product, Third Party Advisory
    Added CWE NIST CWE-347
    Added CPE Configuration OR *cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:-:*:*:*:perl:*:* *cpe:2.3:a:perl:comprehensive_perl_archive_network:2.28:trial:*:*:*:perl:*:*
  • CVE Modified by [email protected]

    Dec. 14, 2021

    Action Type Old Value New Value
    Added Reference http://blogs.perl.org/users/neilb/2021/11/addressing-cpan-vulnerabilities-related-to-checksums.html [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-2020-16156 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-2020-16156 weaknesses.

Exploit Prediction

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

0.18 }} 0.02%

score

0.56398

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: