CVE-2021-3521

Updated: 2023-11-04 20:50:21.2117

Description:

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.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x MEDIUM 4.7

Status

OS name Project name Version Score Severity Status Errata Last updated
AlmaLinux 9.2 ESU rpm 4.16.1.3 4.7 MEDIUM Ignored 2023-11-08 04:07:51
CentOS 6 ELS rpm 4.8.0 4.7 MEDIUM Ignored 2022-08-29 05:02:10
CentOS 7 ELS rpm 4.11.3 4.7 MEDIUM Ignored 2023-09-19 09:30:12
CentOS 8.4 ELS rpm 4.14.3-14 4.7 MEDIUM Released CLSA-2022:1644869807 2022-02-14 20:40:32
CentOS 8.5 ELS rpm 4.14.3-19 4.7 MEDIUM Released CLSA-2022:1644869406 2022-02-14 20:40:32
CloudLinux 6 ELS rpm 4.8.0 4.7 MEDIUM Ignored 2022-08-29 05:02:10
Oracle Linux 6 ELS rpm 4.8.0 4.7 MEDIUM Ignored 2022-08-29 05:02:10