Executive Summary

Informations
Name CVE-2021-3521 First vendor Publication 2022-08-22
Vendor Cve Last vendor Modification 2023-02-12

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Overall CVSS Score 4.7
Base Score 4.7 Environmental Score 4.7
impact SubScore 3.6 Temporal Score 4.7
Exploitabality Sub Score 1
 
Attack Vector Local Attack Complexity High
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact None
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

There is a flaw in RPM's signature functionality. OpenPGP subkeys are associated with a primary key via a "binding signature." RPM does not check the binding signature of subkeys prior to importing them. If an attacker is able to add or socially engineer another party to add a malicious subkey to a legitimate public key, RPM could wrongly trust a malicious signature. The greatest impact of this flaw is to data integrity. To exploit this flaw, an attacker must either compromise an RPM repository or convince an administrator to install an untrusted RPM or public key. It is strongly recommended to only use RPMs and public keys from trusted sources.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3521

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-347 Improper Verification of Cryptographic Signature

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 121

Sources (Detail)

Source Url
GENTOO https://security.gentoo.org/glsa/202210-22
MISC https://access.redhat.com/security/cve/CVE-2021-3521
https://bugzilla.redhat.com/show_bug.cgi?id=1941098
https://github.com/rpm-software-management/rpm/commit/bd36c5dc9fb6d90c46fbfed...
https://github.com/rpm-software-management/rpm/pull/1795/

Alert History

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Date Informations
2024-02-02 02:26:41
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2024-02-01 12:24:13
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2023-09-05 13:20:57
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2023-09-05 01:23:44
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2023-09-02 13:19:32
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2023-09-02 01:24:06
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2023-08-12 13:25:38
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2023-08-12 01:23:19
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2023-08-11 13:17:53
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2023-08-11 01:24:06
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2023-08-06 13:15:52
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2023-08-06 01:23:04
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2023-08-04 13:16:14
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2023-08-04 01:23:25
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2023-07-14 13:16:17
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2023-07-14 01:23:13
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2023-03-29 02:18:26
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2023-03-28 12:23:26
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2023-02-13 05:27:32
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2023-02-03 05:27:35
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2022-12-03 09:27:23
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2022-10-31 09:27:25
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2022-10-11 13:08:04
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2022-10-11 01:22:53
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2022-09-12 21:27:33
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2022-08-26 21:27:15
  • Multiple Updates
2022-08-22 21:27:09
  • First insertion