CVE-2018-9336

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Source
https://nvd.nist.gov/vuln/detail/CVE-2018-9336
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-9336.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2018-9336
Downstream
Related
Published
2018-05-01T18:29:00Z
Modified
2025-10-15T10:05:34.830710Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact including privilege escalation.

References

Affected packages

Git / github.com/openvpn/openvpn

Affected ranges

Type
GIT
Repo
https://github.com/openvpn/openvpn
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1394192b210cb3c6624a7419bcf3ff966742e79b
Fixed
b3a7f452206607fb23d5cea76339dfb164c283f2

Affected versions

v2.*

v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.1_rc1
v2.1_rc10
v2.1_rc11
v2.1_rc12
v2.1_rc13
v2.1_rc14
v2.1_rc15
v2.1_rc16
v2.1_rc17
v2.1_rc18
v2.1_rc19
v2.1_rc2
v2.1_rc20
v2.1_rc21
v2.1_rc22
v2.1_rc3
v2.1_rc4
v2.1_rc5
v2.1_rc6
v2.1_rc7
v2.1_rc8
v2.1_rc9
v2.2-RC
v2.2-RC2
v2.2-beta4
v2.2-beta5
v2.3-alpha1
v2.3_alpha2
v2.3_alpha3
v2.3_beta1
v2.4.0
v2.4.1
v2.4.2
v2.4.3
v2.4.4
v2.4.5
v2.4_alpha1
v2.4_alpha2
v2.4_beta1
v2.4_beta2
v2.4_rc1
v2.4_rc2

Database specific

vanir_signatures

[
    {
        "id": "CVE-2018-9336-6f6cb009",
        "target": {
            "function": "GetStartupData",
            "file": "src/openvpnserv/interactive.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 1801.0,
            "function_hash": "76249174896798077986787021284902443957"
        },
        "source": "https://github.com/openvpn/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79b",
        "deprecated": false
    },
    {
        "id": "CVE-2018-9336-b726e6c2",
        "target": {
            "file": "src/openvpnserv/interactive.c"
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "289438739866009732693574682006466857681",
                "321565621241284017888958497464079295163",
                "195788173835312840708182270129385780967",
                "157149519107656280786448143671546800758",
                "330594636882758798577265977046886899589",
                "61946047064732831183916419652892674079",
                "73819516014268841906567609661453268985",
                "53477928483126425049698987735296952292",
                "160457593547376328576023042434816934222",
                "102247858346367447205334963596539921621",
                "37760868789385960205315602176273650548",
                "53416876412599990887617656792587425944",
                "231052184390747051670143023779207169899",
                "82101472118118567585578736071106229258",
                "306507218426212718522252431219043743649",
                "2766319541782805131682120927575304148",
                "110753385165441245116358304053334545450",
                "290008412599615179597160777647644121426",
                "197093618283534262316211851307390296078",
                "231838072196818321118202676689277965807",
                "163136148559021466918701586049456598696",
                "57652015971833478580836840077705432245",
                "188431597377538567314213316948483171797",
                "45804946495876171431938301213448644363",
                "35490655318343064911912676930636225462",
                "189921561168834180170229040099364593666",
                "234424307210144426171304176440220006390",
                "60869185759417503061368576737633381064",
                "106049124931381612333091018629992720739",
                "148025771116657418264690920352564529771",
                "184864002078368697997805638241742679035",
                "230318638235804652942591183825937822078",
                "243422924903089937958313966285867213026",
                "297557170468421667846869797139637183819",
                "34671599296192400017110588308363004350",
                "292353436963983896055666031584247941394",
                "61570016092430263203832958639438681880",
                "141441711254298611049517417527928691692",
                "120353406661613926063927761543085251023",
                "293785784376869473936078925543400440146",
                "125496552704587362904006732753252071462"
            ],
            "threshold": 0.9
        },
        "source": "https://github.com/openvpn/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79b",
        "deprecated": false
    }
]