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cvelistRedhatCVELIST:CVE-2021-3521
HistoryAug 22, 2022 - 12:00 a.m.

CVE-2021-3521

2022-08-2200:00:00
CWE-347
redhat
www.cve.org

5.1 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

30.8%

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.

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "RPM",
    "versions": [
      {
        "version": "Fixed in rpm-4.18.0-beta1, rpm-4.18.0-alpha2, rpm-4.18.0-alpha1 .",
        "status": "affected"
      }
    ]
  }
]