CVE-2021-20271

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Source
https://cve.org/CVERecord?id=CVE-2021-20271
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-20271.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-20271
Downstream
Related
Published
2021-03-26T17:15:13Z
Modified
2026-07-09T00:07:22Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "32"
                },
                {
                    "last_affected": "32"
                },
                {
                    "introduced": "33"
                },
                {
                    "last_affected": "33"
                },
                {
                    "introduced": "34"
                },
                {
                    "last_affected": "34"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "fedoraproject:fedora"
        },
        {
            "cpes": [
                "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "8.0"
                },
                {
                    "last_affected": "8.0"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "redhat:enterprise_linux"
        },
        {
            "cpes": [
                "cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build14398:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "introduced": "v8-build14398"
                },
                {
                    "last_affected": "v8-build14398"
                }
            ],
            "source": "CPE_STRING",
            "vendor_product": "starwindsoftware:starwind_virtual_san"
        }
    ]
}
References

Affected packages

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

Affected ranges

Type
GIT
Repo
https://github.com/rpm-software-management/rpm
Events
Introduced
8c6c17759781da75c6aff861fab721d91269c0f9
Fixed
a8eade3f53f9c64543813eac8cd5dad392eaae3b
Introduced
cd7f9303ef1070f027493cad7d00bc66935af2a0
Fixed
3659b8a04f5b8bacf6535e0124e7fe23f15286bd
Introduced
a071f1d0dfcb801c5cf11cc2d716abfa23f8c1ad
Last Affected
32a49f73d760f4162a37188073efd6bf5d464d9b
Fixed
d6a86b5e69e46cc283b1e06c92343319beb42e21
Database specific
Show details 
{
    "cpe": [
        "cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:rpm:rpm:4.15.0:alpha:*:*:*:*:*:*",
        "cpe:2.3:a:rpm:rpm:4.15.0:beta1:*:*:*:*:*:*",
        "cpe:2.3:a:rpm:rpm:4.15.0:rc1:*:*:*:*:*:*",
        "cpe:2.3:a:rpm:rpm:4.16.0:alpha:*:*:*:*:*:*",
        "cpe:2.3:a:rpm:rpm:4.16.0:beta2:*:*:*:*:*:*",
        "cpe:2.3:a:rpm:rpm:4.16.0:beta3:*:*:*:*:*:*",
        "cpe:2.3:a:rpm:rpm:4.16.0:rc1:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "4.15.0"
        },
        {
            "fixed": "4.15.1.3"
        },
        {
            "introduced": "4.16.0"
        },
        {
            "fixed": "4.16.1.3"
        },
        {
            "introduced": "4.15.0-alpha"
        },
        {
            "last_affected": "4.15.0-alpha"
        },
        {
            "introduced": "4.15.0-beta1"
        },
        {
            "last_affected": "4.15.0-beta1"
        },
        {
            "introduced": "4.15.0-rc1"
        },
        {
            "last_affected": "4.15.0-rc1"
        },
        {
            "introduced": "4.16.0-alpha"
        },
        {
            "last_affected": "4.16.0-alpha"
        },
        {
            "introduced": "4.16.0-beta2"
        },
        {
            "last_affected": "4.16.0-beta2"
        },
        {
            "introduced": "4.16.0-beta3"
        },
        {
            "last_affected": "4.16.0-beta3"
        },
        {
            "introduced": "4.16.0-rc1"
        },
        {
            "last_affected": "4.16.0-rc1"
        }
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

4.*
4.15.0-alpha
4.15.0-beta1
4.15.0-rc1
4.16.0-alpha
4.16.0-beta2
4.16.0-beta3
4.16.0-rc1
rpm-4.*
rpm-4.15.0-alpha
rpm-4.15.0-release
rpm-4.15.1-release
rpm-4.16.0-alpha
rpm-4.16.0-beta2
rpm-4.16.0-beta3
rpm-4.16.0-rc1
rpm-4.16.0-release
rpm-4.16.1-release
rpm-4.16.1.1-release
rpm-4.16.1.2-release

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-20271.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "20048171095207656906286157320215457454",
            "length": 1162
        },
        "id": "CVE-2021-20271-a263355a",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21",
        "target": {
            "file": "lib/package.c",
            "function": "rpmReadPackageFile"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "42007002990315704298120220962834331013",
            "length": 1479
        },
        "id": "CVE-2021-20271-bb178e26",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21",
        "target": {
            "file": "lib/package.c",
            "function": "headerMergeLegacySigs"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "24275801739176814445790225036514810367",
                "146449676550170976494015790418581282484",
                "59692120730519522461031139487139021994",
                "237438668882707351528086875273107835415",
                "188253714955682294875770722574693963655",
                "95712636666319716016571947362863082458",
                "92311055355198149853447891803132470773",
                "42131774137503273138337216115590656444",
                "153884652419611992565169832839796207502",
                "74644144116301880418020155257845471982",
                "2104988193872832483380127340680905878",
                "234443884060578478950190847478188321346",
                "167475506737928333071182665248974898425",
                "157394582667230566873922788279107459757",
                "82059186512116620320158458564266100352",
                "233485225200727645330135368487841999587",
                "85657501174146104478799331414154896576",
                "174870900622258089107480236762771057153",
                "34907199479596137037591206953449485309",
                "321147128575744151003330869327601389016",
                "303393578101490065906516034843403880281",
                "318437721489588304315821989682496995184",
                "38006337004050367849014125494971575537",
                "175061254615743437520094884364105697233",
                "77363606146383857009656345556156423230",
                "186480394492936430498021022304037294784",
                "181770857753770097517746901524745191908",
                "30913405040175035534764784102056841699",
                "236889513680266079035851799639803890533",
                "194114407232039335095556079570329067676",
                "249022990065958714816111991339255160395",
                "54960641298191277884886659083762790780",
                "127992657957590043811760327646776932046",
                "304698036602247774143869017978433554732",
                "250744351131081829530625072565675217722",
                "36656784869560343249949288503597589348",
                "170547716959680533076677559189261145640",
                "121713541064240962798640750646580808579",
                "186762389796691736500395706047092641008",
                "23200626527644494473308427936974857811",
                "154918870431555591112890759389551536328",
                "291858413894433898125463120663368392364",
                "225718472791953043972022796009114754190",
                "108801656677693814302435191275033585710",
                "193447927343475926499602080310565766494",
                "113550618227067861099788710945551064385",
                "274435711931836628681103840266923684609",
                "108891629451031021363620012033597097014",
                "157902946756436242482462236470357416589",
                "304063467140049501021933125641651087250",
                "102707166771665844076021244975419672366",
                "294336125026284019428175307101295050889",
                "116851542740175563369683430539555981016",
                "216200495206398465997049687262527180217",
                "79191873615801662582418252464382605832",
                "164978430970920805091239061673019719106",
                "282921449663537929048759682202928539995",
                "90973143989974989522332153355976316126",
                "287245724537977820385873217815643351515",
                "44802529730012567971170220922554565749",
                "268690657842368192836387303599115813050",
                "144010947238307124958539323349633054015",
                "14672178449306596253776894693424682853",
                "254948836728881060187961985032227148746",
                "224914003870438559021890205490402143160",
                "96805489812739485968183963160616398206",
                "236564457060156221558607823212047790920",
                "48978219028165198047704726192602746515",
                "297977904474851821660162425641097275999",
                "8984916548224638021709965003739438299",
                "255246192547716801015089390704859725892",
                "33918144162416462101818060040215351961",
                "170964427126840192885688019616971642955",
                "105311074047723310597162550352577188475",
                "67340489106477276261440066076091306008",
                "61220301857844028518512203141058005866",
                "25397590813383690955468288709214786215",
                "68862407019424048919648730631461319197"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2021-20271-c02cf37b",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21",
        "target": {
            "file": "lib/package.c"
        }
    }
]
vanir_signatures_modified 
"2026-07-09T00:07:22Z"