CVE-2021-35939

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-35939
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-35939.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-35939
Downstream
Related
Published
2022-08-26T16:15:08Z
Modified
2025-10-14T18:29:00.189950Z
Severity
  • 6.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as 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
96ec957e281220f8e137a2d5eb23b83a6377d556

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-4.17.0-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/96ec957e281220f8e137a2d5eb23b83a6377d556",
        "signature_version": "v1",
        "target": {
            "file": "lib/fsm.c",
            "function": "fsmMkdir"
        },
        "digest": {
            "length": 342.0,
            "function_hash": "51856694465730866450330405833723620433"
        },
        "deprecated": false,
        "signature_type": "Function",
        "id": "CVE-2021-35939-1956640a"
    },
    {
        "source": "https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556",
        "signature_version": "v1",
        "target": {
            "file": "lib/fsm.c",
            "function": "fsmMkdirs"
        },
        "digest": {
            "length": 1385.0,
            "function_hash": "186034111476049186295300829892025012098"
        },
        "deprecated": false,
        "signature_type": "Function",
        "id": "CVE-2021-35939-92eaef60"
    },
    {
        "source": "https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556",
        "signature_version": "v1",
        "target": {
            "file": "lib/fsm.c"
        },
        "digest": {
            "line_hashes": [
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                "103918263139658266359659253390788510811",
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                "252780761503720508236924016421339661105",
                "306486012318275614874420375777983004823",
                "81147660838892119558011752561765380636",
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                "180172825599815570140813602814305065781",
                "98514788840922419558881610077720269328",
                "17271428397838605878717237933182815319",
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                "177340075446683085766489488654292829106",
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                "114474637711227907794265604611036663062",
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                "314337829508032493075624335776805589329",
                "106389535289211416977866438085381885635",
                "262111582687733395837305764171379122112",
                "47211532644488802689508623263915291357",
                "123990790715856384943520816804110341608",
                "33648731061743324655975397418963000241",
                "91105230833402031625430458487020752614",
                "162792721992481528839006550469104190598",
                "277472717077857046886642537857922451993",
                "163972938749664446231861700577244659944",
                "219564738707654954082414494462882481818",
                "200380991837978245483462706612671581742",
                "74060363666841549345116399017296616347",
                "146778608273975846262152467477418034100",
                "171186788299548222697400784015004250081",
                "96592579453297897904035690341527078532",
                "16505914781300497045734244258737962600",
                "285396548986910663191192016704370084766",
                "70103649481855858505866411847677118660",
                "302217269603846422509190067178406842050",
                "39964777620690388546747779587034311530"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "signature_type": "Line",
        "id": "CVE-2021-35939-acb47abe"
    },
    {
        "source": "https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556",
        "signature_version": "v1",
        "target": {
            "file": "lib/fsm.c",
            "function": "rpmPackageFilesInstall"
        },
        "digest": {
            "length": 4983.0,
            "function_hash": "152832777518386822551335769201256915448"
        },
        "deprecated": false,
        "signature_type": "Function",
        "id": "CVE-2021-35939-dd9ca3d6"
    }
]