CVE-2021-20271

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-20271
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-20271.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-20271
Downstream
Related
Published
2021-03-26T17:15:13Z
Modified
2025-10-15T12:24:49.522781Z
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.

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
d6a86b5e69e46cc283b1e06c92343319beb42e21

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-4.4-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

vanir_signatures

[
    {
        "source": "https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21",
        "target": {
            "function": "rpmReadPackageFile",
            "file": "lib/package.c"
        },
        "id": "CVE-2021-20271-a263355a",
        "signature_version": "v1",
        "digest": {
            "function_hash": "20048171095207656906286157320215457454",
            "length": 1162.0
        },
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "source": "https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21",
        "target": {
            "function": "headerMergeLegacySigs",
            "file": "lib/package.c"
        },
        "id": "CVE-2021-20271-bb178e26",
        "signature_version": "v1",
        "digest": {
            "function_hash": "42007002990315704298120220962834331013",
            "length": 1479.0
        },
        "signature_type": "Function",
        "deprecated": false
    },
    {
        "source": "https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21",
        "target": {
            "file": "lib/package.c"
        },
        "id": "CVE-2021-20271-c02cf37b",
        "signature_version": "v1",
        "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
        },
        "signature_type": "Line",
        "deprecated": false
    }
]