CVE & CISA-KEV Catalog

CVE-2021-3421

MEDIUM
5.5
CVSS v3
NVD

Description

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.

CWE-347

How to fix

Remediation Available
rpmDebian
Fixed in:4.16.1.2+dfsg1-1CVE-2021-3421
Fixed in:4.16.1.2+dfsg1-1CVE-2021-3421
Fixed in:4.16.1.2+dfsg1-1CVE-2021-3421
Fixed in:4.16.1.2+dfsg1-1CVE-2021-3421
librpm3Ubuntu
Fixed in:4.12.0.1+dfsg1-3ubuntu0.1~esm1USN-5273-1
librpm8Ubuntu
Fixed in:4.14.1+dfsg1-2ubuntu0.1~esm1USN-5273-1
Fixed in:4.14.2.1+dfsg1-1ubuntu0.1~esm1USN-5273-1
librpmbuild3Ubuntu
Fixed in:4.12.0.1+dfsg1-3ubuntu0.1~esm1USN-5273-1
librpmbuild8Ubuntu
Fixed in:4.14.1+dfsg1-2ubuntu0.1~esm1USN-5273-1
Fixed in:4.14.2.1+dfsg1-1ubuntu0.1~esm1USN-5273-1
librpmio3Ubuntu
Fixed in:4.12.0.1+dfsg1-3ubuntu0.1~esm1USN-5273-1
librpmio8Ubuntu
Fixed in:4.14.1+dfsg1-2ubuntu0.1~esm1USN-5273-1
Fixed in:4.14.2.1+dfsg1-1ubuntu0.1~esm1USN-5273-1
librpmsign3Ubuntu
Fixed in:4.12.0.1+dfsg1-3ubuntu0.1~esm1USN-5273-1
librpmsign8Ubuntu
Fixed in:4.14.1+dfsg1-2ubuntu0.1~esm1USN-5273-1
Fixed in:4.14.2.1+dfsg1-1ubuntu0.1~esm1USN-5273-1
rpmUbuntu
Fixed in:4.12.0.1+dfsg1-3ubuntu0.1~esm1USN-5273-1
Fixed in:4.14.1+dfsg1-2ubuntu0.1~esm1USN-5273-1
Fixed in:4.14.2.1+dfsg1-1ubuntu0.1~esm1USN-5273-1
rpm-commonUbuntu
Fixed in:4.12.0.1+dfsg1-3ubuntu0.1~esm1USN-5273-1
Fixed in:4.14.1+dfsg1-2ubuntu0.1~esm1USN-5273-1
Fixed in:4.14.2.1+dfsg1-1ubuntu0.1~esm1USN-5273-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Exploit Intelligence

0.70%probability of exploitation in 30 days
49thpercentile

Moderate risk: more likely to be exploited than 49% of all known CVEs.

References

Third-Party Advisory1

Related Vulnerabilities

Other CWE-347 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2018-16042Medium6.582%--
CVE-2025-59718Critical9.866%KEVFix
CVE-2025-25292Critical9.864%-Fix
CVE-2021-22160Critical9.853%-Fix
CVE-2013-3900Medium5.545%KEV-
CVE-2018-0114High7.543%-Fix
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CVE-2021-3421 severity badge

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.