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CVE-2020-10759

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Date: September 15, 2020

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.

Language: C

Severity Score

Related Resources (8)

https://access.redhat.com/errata/RHSA-2020:4436
https://security-tracker.debian.org/tracker/CVE-2020-10759
https://bugzilla.redhat.com/show_bug.cgi?id=1844316
https://github.com/justinsteven/advisories/blob/master/2020_fwupd_dangling_s3_bucket_and_CVE-2020-10759_signature_verification_bypass.md
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-10759
https://nvd.nist.gov/vuln/detail/CVE-2020-10759
https://access.redhat.com/security/cve/CVE-2020-10759
https://www.mend.io/vulnerability-database/CVE-2020-10759

Severity Score

Weakness Type (CWE)

Improper Verification of Cryptographic Signature

CWE-347

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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