Vulnerability Name:

CVE-2020-16154 (CCN-215701)

Assigned:2020-07-30
Published:2021-11-23
Updated:2022-03-01
Summary:The App::cpanminus package 1.7044 for Perl allows Signature Verification Bypass.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.0 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.0 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-347
Vulnerability Consequences:Bypass Security
References:Source: CCN
Type: Neil Bowers Blog, November 23, 2021 6:00 PM
Addressing CPAN vulnerabilities related to checksums

Source: MITRE
Type: CNA
CVE-2020-16154

Source: CCN
Type: CPAN Web site
CPAN

Source: CCN
Type: Hackeriet Blog, 23/11/21
Signature Verification Vulnerabilities in CPAN.pm, cpanminus and CPAN::Checksums

Source: MISC
Type: Exploit, Third Party Advisory
https://blog.hackeriet.no/cpan-signature-verification-vulnerabilities/

Source: XF
Type: UNKNOWN
perl-cpan-cve202016154-sec-bypass(215701)

Source: CCN
Type: CPAN GIT Repository
CPAN::Checksums package

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-f4b7f896e3

Source: MISC
Type: Product, Third Party Advisory
https://metacpan.org/pod/App::cpanminus

Vulnerable Configuration:Configuration 1:
  • cpe:/a:app::cpanminus_project:app::cpanminus:1.7044:*:*:*:*:perl:*:*

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    app::cpanminus_project app::cpanminus 1.7044
    fedoraproject fedora 35