CVE-2021-20266

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Source
https://cve.org/CVERecord?id=CVE-2021-20266
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20266.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-20266
Downstream
Related
Published
2021-04-30T12:15:07.500Z
Modified
2026-05-28T04:06:21.335642598Z
Severity
  • 4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability.

Database specific 
{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "last_affected": "33"
                },
                {
                    "last_affected": "34"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "fedoraproject:fedora",
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ]
        }
    ]
}
References

Affected packages

Git / github.com/rpm-software-management/rpm

Affected ranges

Type
GIT
Repo
https://github.com/rpm-software-management/rpm
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
3659b8a04f5b8bacf6535e0124e7fe23f15286bd
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.16.1.3"
        }
    ],
    "cpe": "cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE"
}

Affected versions

rpm-4.*
rpm-4.11.0-alpha
rpm-4.12.0-alpha
rpm-4.13.0-alpha
rpm-4.15.0-alpha
rpm-4.16.0-alpha
rpm-4.16.0-beta2
rpm-4.16.0-beta3
rpm-4.16.0-release
rpm-4.16.1-release
rpm-4.16.1.1-release
rpm-4.16.1.2-release
rpm-4.4-release
rpm-4.4.1-release
rpm-4.4.2-release
rpm-4.4.2.1-rc1
rpm-4.4.2.1-rc2
rpm-4.8.0-beta1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20266.json"