1. Home
  2. Vulnerabilities
  3. CVE-2020-10759
6.0
MEDIUM CVSS 3.1
CVE-2020-10759
Fwupd PGP Signature Bypass Vulnerability
Description

A PGP signature bypass flaw was found in fwupd (all versions), which could lead to the installation of unsigned firmware. As per upstream, a signature bypass is theoretically possible, but not practical because the Linux Vendor Firmware Service (LVFS) is either not implemented or enabled in versions of fwupd shipped with Red Hat Enterprise Linux 7 and 8. The highest threat from this vulnerability is to confidentiality and integrity.

INFO

Published Date :

Sept. 15, 2020, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 4:56 a.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2020-10759 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 Redhat enterprise_linux
1 Fwupd fwupd
: Total Affected Vendor : 2 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 LOW [email protected]
CVSS 3.1 MEDIUM [email protected]
Solution
The fwupd PGP signature bypass vulnerability can be remediated by updating affected packages.
  • Update the affected fwupd and related packages.
  • Apply the latest available patches to the system.
Public PoC/Exploit Available at Github

CVE-2020-10759 has a 8 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-2020-10759.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1844316 Issue Tracking Third Party Advisory
https://github.com/justinsteven/advisories/blob/master/2020_fwupd_dangling_s3_bucket_and_CVE-2020-10759_signature_verification_bypass.md Exploit Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1844316 Issue Tracking Third Party Advisory
https://github.com/justinsteven/advisories/blob/master/2020_fwupd_dangling_s3_bucket_and_CVE-2020-10759_signature_verification_bypass.md Exploit Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-10759 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-2020-10759 weaknesses.

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
soosmile/POC

None

Updated: 5 months ago
9 stars 1 fork 1 watcher
Born at : June 21, 2022, 7:45 a.m. This repo has been linked 944 different CVEs too.
Profile Photo
developer3000S/PoC-in-GitHub

None

Updated: 2 months, 1 week ago
37 stars 4 fork 4 watcher
Born at : March 12, 2021, 12:22 p.m. This repo has been linked 1063 different CVEs too.
Profile Photo
alphaSeclab/sec-daily-2020

2020年发布到阿尔法实验室微信公众号的所有安全资讯汇总

Updated: 3 months, 4 weeks ago
41 stars 15 fork 15 watcher
Born at : Jan. 11, 2021, 2:08 a.m. This repo has been linked 190 different CVEs too.
Profile Photo
hectorgie/PoC-in-GitHub

None

Updated: 5 months ago
18 stars 10 fork 10 watcher
Born at : Jan. 2, 2021, 10:19 p.m. This repo has been linked 1053 different CVEs too.
Profile Photo
0xT11/CVE-POC

None

Updated: 2 months, 1 week ago
84 stars 31 fork 31 watcher
Born at : Oct. 2, 2020, 2:49 p.m. This repo has been linked 1114 different CVEs too.
Profile Photo
justinsteven/CVE-2020-10759-poc

Proof of Concept for CVE-2020-10759 (fwupd signature validation bypass)

Python

Updated: 5 years, 2 months ago
0 stars 0 fork 0 watcher
Born at : June 6, 2020, 4:44 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
hannob/pgpbugs

A history of PGP-related vulnerabilities

Updated: 5 months, 2 weeks ago
24 stars 4 fork 4 watcher
Born at : May 15, 2020, 9:42 a.m. This repo has been linked 15 different CVEs too.
Profile Photo
justinsteven/advisories

None

HTML

Updated: 1 month, 3 weeks ago
270 stars 28 fork 28 watcher
Born at : Sept. 18, 2016, 11:03 p.m. This repo has been linked 10 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-2020-10759 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2020-10759 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://bugzilla.redhat.com/show_bug.cgi?id=1844316
    Added Reference https://github.com/justinsteven/advisories/blob/master/2020_fwupd_dangling_s3_bucket_and_CVE-2020-10759_signature_verification_bypass.md
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Feb. 12, 2023

    Action Type Old Value New Value
    Changed Description A PGP signature bypass flaw was found in fwupd, which could lead to the installation of unsigned firmware. As per upstream, a signature bypass is theoretically possible, but not practical because the Linux Vendor Firmware Service (LVFS) is either not implemented or enabled in versions of fwupd shipped with Red Hat Enterprise Linux 7 and 8. The highest threat from this vulnerability is to confidentiality and integrity. A PGP signature bypass flaw was found in fwupd (all versions), which could lead to the installation of unsigned firmware. As per upstream, a signature bypass is theoretically possible, but not practical because the Linux Vendor Firmware Service (LVFS) is either not implemented or enabled in versions of fwupd shipped with Red Hat Enterprise Linux 7 and 8. The highest threat from this vulnerability is to confidentiality and integrity.
    Removed CVSS V3.1 Red Hat, Inc. AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
    Removed Reference https://access.redhat.com/errata/RHSA-2020:4436 [No Types Assigned]
    Removed Reference https://access.redhat.com/security/cve/CVE-2020-10759 [No Types Assigned]
    Added CWE Red Hat, Inc. CWE-347
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed Description A PGP signature bypass flaw was found in fwupd (all versions), which could lead to the installation of unsigned firmware. As per upstream, a signature bypass is theoretically possible, but not practical because the Linux Vendor Firmware Service (LVFS) is either not implemented or enabled in versions of fwupd shipped with Red Hat Enterprise Linux 7 and 8. The highest threat from this vulnerability is to confidentiality and integrity. A PGP signature bypass flaw was found in fwupd, which could lead to the installation of unsigned firmware. As per upstream, a signature bypass is theoretically possible, but not practical because the Linux Vendor Firmware Service (LVFS) is either not implemented or enabled in versions of fwupd shipped with Red Hat Enterprise Linux 7 and 8. The highest threat from this vulnerability is to confidentiality and integrity.
    Added CVSS V3.1 Red Hat, Inc. AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
    Added Reference https://access.redhat.com/security/cve/CVE-2020-10759 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2020:4436 [No Types Assigned]
    Removed CWE Red Hat, Inc. CWE-347
  • Initial Analysis by [email protected]

    Sep. 22, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:P/I:P/A:N)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1844316 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1844316 Issue Tracking, Third Party Advisory
    Changed Reference Type https://github.com/justinsteven/advisories/blob/master/2020_fwupd_dangling_s3_bucket_and_CVE-2020-10759_signature_verification_bypass.md No Types Assigned https://github.com/justinsteven/advisories/blob/master/2020_fwupd_dangling_s3_bucket_and_CVE-2020-10759_signature_verification_bypass.md Exploit, Third Party Advisory
    Added CWE NIST CWE-347
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
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.
Vulnerability Scoring Details
Base CVSS Score: 6
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 3.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

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

0.01 }} -0.01%

score

0.00243

percentile