What is CVE-2021-3421?

CVE-2021-3421 is a medium-severity vulnerability in Rpm, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.5/10. Published 2021-05-19.

How severe is CVE-2021-3421?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Rpm

CVE-2021-3421

A flaw was found in the RPM package in the read functionality. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package or compromise an RPM repository, to cause RPM database corruption. The highest threat from this vulnerability is to data integrity. This flaw affects RPM versions before 4.17.0-alpha.

EPSS: 0.007 (48.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Rpm
Fedoraproject Fedora — versions 32, 33, 34
Redhat Enterprise_linux — versions 8.0
N/a Rpm — versions rpm 4.17.0-alpha

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
secalert@redhat.com (x_refsource_FEDORA, vendor-advisory)
secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)

Frequently asked questions

What is CVE-2021-3421?: CVE-2021-3421 is a medium-severity vulnerability in Rpm, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.5/10. Published 2021-05-19.
How severe is CVE-2021-3421?: Medium severity. CVSS v3 base score is 5.5 out of 10.