CVE-2023-39969

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Source

https://nvd.nist.gov/vuln/detail/CVE-2023-39969

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-39969.json

JSON Data

https://api.test.osv.dev/v1/vulns/CVE-2023-39969

Aliases

GHSA-rc7g-99x7-4p9g

Published

2023-08-09T15:34:07Z

Modified

2025-10-30T20:22:23.400965Z

Severity

9.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator

Summary

uthenticode signature validation bypass vulnerability

Details

uthenticode is a small cross-platform library for partially verifying Authenticode digital signatures. Version 1.0.9 of uthenticode hashed the entire file rather than hashing sections by virtual address, in violation of the Authenticode specification. As a result, an attacker could modify code within a binary without changing its Authenticode hash, making it appear valid from uthenticode's perspective. Versions of uthenticode prior to 1.0.9 are not vulnerable to this attack, nor are versions in the 2.x series. By design, uthenticode does not perform full-chain validation. However, the malleability of signature verification introduced in 1.0.9 was an unintended oversight. The 2.x series addresses the vulnerability. Versions prior to 1.0.9 are also not vulnerable, but users are encouraged to upgrade rather than downgrade. There are no workarounds to this vulnerability.

Database specific

{
    "cwe_ids": [
        "CWE-347"
    ]
}

References

Affected packages

Git / github.com/trailofbits/uthenticode

Affected ranges

Type: GIT
Repo: https://github.com/trailofbits/uthenticode
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

8670b7bb9154d79c276483dcb7c9e9fd5e66455b

Affected versions

v1.*

v1.0.0

v1.0.0.pre.1

v1.0.0.pre.2

v1.0.0.pre.3

v1.0.0.pre.4

v1.0.0.pre.5

v1.0.0.pre.5.1

v1.0.0.pre.6

v1.0.0.pre.7

v1.0.0.pre.8

v1.0.1

v1.0.2

v1.0.3

v1.0.4

v1.0.5

v1.0.6

v1.0.6.pre.1

v1.0.7

v1.0.8

v1.0.9

Database specific

vanir_signatures

[
    {
        "signature_version": "v1",
        "target": {
            "function": "TEST_F",
            "file": "test/uthenticode-test.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "function_hash": "52519532579298097849325176364313690990",
            "length": 738.0
        },
        "id": "CVE-2023-39969-0eedf6f1",
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "target": {
            "function": "main",
            "file": "src/svcli/svcli.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "function_hash": "287136748298044510105787214174865856235",
            "length": 3304.0
        },
        "id": "CVE-2023-39969-247491a3",
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "src/include/uthenticode.h"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "224513235038466017800601904901210567836",
                "297058746041384752412942209383405866904",
                "71019581105866701291106949643958033113"
            ]
        },
        "id": "CVE-2023-39969-2694cb96",
        "signature_type": "Line"
    },
    {
        "signature_version": "v1",
        "target": {
            "function": "TEST_F",
            "file": "test/uthenticode-test.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "function_hash": "46240545201574304308004113642633584854",
            "length": 738.0
        },
        "id": "CVE-2023-39969-3b634b47",
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "test/uthenticode-test.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "26841265454872298612984465824079060311",
                "176417717521727812114144389624298298629",
                "83231992635368778569191228699596405717",
                "75097619347979806076136499842815630777",
                "107677686897427103167723656682872550806",
                "280941275085927608863728433848736734136",
                "315283021201105775895136005412391134603",
                "61388759636340022459858489421194987848",
                "265914872236067553284611728049390361679",
                "75534710179622873602033842596338169438",
                "177449488690189671879892985175676944708",
                "141695117690061418964777859006427945285",
                "237440299662664042845644583195217492287",
                "16417442452955046752392771603636582333",
                "340137862259065162509924089050379607979",
                "255634363377179763598757694003164058788",
                "83231992635368778569191228699596405717",
                "298727546188414222159699224525871612714",
                "80921186992334759466717729776769135580",
                "285846233970093139379551901722602251650",
                "296995300096643031785529826266136553488",
                "13807895303118998937343416969289976621",
                "121553936289520142974514427443599047104",
                "12452486413312735405048644762527835499",
                "274704625595712302128973110461847606131",
                "59454296084380389288701928512366953830",
                "154339568488109512957252517609002673784",
                "74727844736009391838960348006897067722",
                "49918031509079899154565394525110678846",
                "156383611306702835290886147609728474768",
                "83231992635368778569191228699596405717",
                "298727546188414222159699224525871612714",
                "80921186992334759466717729776769135580",
                "285846233970093139379551901722602251650",
                "296995300096643031785529826266136553488",
                "13807895303118998937343416969289976621",
                "121553936289520142974514427443599047104",
                "12452486413312735405048644762527835499",
                "274704625595712302128973110461847606131",
                "59454296084380389288701928512366953830",
                "144965204263309705699473807784113997001",
                "300348340030234119590980432366150750928",
                "6074263487273987214437728280536048553",
                "280026723654071971832279830967608048804",
                "83231992635368778569191228699596405717",
                "253136275707729667248198737048869634078",
                "237192560740048263686574398391048418688",
                "155303932663834107018231010269028572243",
                "176521139099121714800041865241392563410",
                "101268929041815910340362724678711621550",
                "59193833387757340240055804567483287456",
                "151312703092508559467075292128491214627",
                "302592796332297827307258556482113476628",
                "145940913210600712775721279220495448555",
                "334193143237114969389029523069860983553",
                "255136953959162418300034328494156043723"
            ]
        },
        "id": "CVE-2023-39969-7ca9830c",
        "signature_type": "Line"
    },
    {
        "signature_version": "v1",
        "target": {
            "function": "calculate_checksum",
            "file": "src/uthenticode.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "function_hash": "272765179330635670347885234307075202347",
            "length": 2122.0
        },
        "id": "CVE-2023-39969-804201a1",
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "src/svcli/svcli.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "139532799477733172794497460196999870794",
                "239362477940238872308977651283263702778",
                "250500780865551692864845635610512387104",
                "263869041646294982700062168001093247097"
            ]
        },
        "id": "CVE-2023-39969-8373b4eb",
        "signature_type": "Line"
    },
    {
        "signature_version": "v1",
        "target": {
            "function": "TEST_F",
            "file": "test/uthenticode-test.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "function_hash": "46240545201574304308004113642633584854",
            "length": 738.0
        },
        "id": "CVE-2023-39969-a9d3fbd7",
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "target": {
            "function": "TEST_F",
            "file": "test/uthenticode-test.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "function_hash": "243480121842989000028677669868346160518",
            "length": 738.0
        },
        "id": "CVE-2023-39969-c1919087",
        "signature_type": "Function"
    },
    {
        "signature_version": "v1",
        "target": {
            "file": "src/uthenticode.cpp"
        },
        "deprecated": false,
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "108925565217364905276580797068079017656",
                "313016411121616817049584118921028031649",
                "216482561830618217642315334888145712469",
                "270316484766786073821352316275941528994",
                "177652854223644796160723061066477485700",
                "297469935570189597634748731656252389651",
                "210591118838871763726044736876970347278",
                "195148653456583223464498665626003600057",
                "63421706087354519003245958865209378100",
                "104367601856571164537276239693474483729",
                "182608741134035822744895344412531401614",
                "225542332087551538423566062837673900638",
                "215008067283439446327353187428395877383",
                "252041966048547557285266471943562267581",
                "283810403253106918216040628177020400555",
                "261566942661550396527789733724432588533",
                "31692128243250309265019842884899264815",
                "173523622423611021664233990665172668921",
                "215999905716476895774206035777726002865",
                "253607878748476544446881861110167432704",
                "311847929733923854717166833303670041641",
                "197966310068110628809103687783475816335",
                "314670663847287428421313683155793907919",
                "280992837438360234540561257962934966214",
                "50259916597182444074910169769564168445",
                "145280495144905461983680150813491827958",
                "255217064735915501233495734150331910922",
                "65713102320971652723747678544430047544",
                "266211427986124781764741922917492732044",
                "232925518079237611052342959875553426549",
                "282056909110025040025139836388421225835",
                "192834988780123154389077909869441816148",
                "87933699809967163607439170254776669682",
                "193275608465423724925979396436163016142",
                "314020632243435068504511045762825800344"
            ]
        },
        "id": "CVE-2023-39969-e1b93129",
        "signature_type": "Line"
    }
]