CVE-2023-39969

See a problem?
Please try reporting it to the source first.
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
2023-08-09T15:34:07.776Z
Modified
2025-11-29T14:32:39.614080Z
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 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39969.json",
    "cna_assigner": "GitHub_M",
    "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_type": "Function",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-0eedf6f1",
        "target": {
            "file": "test/uthenticode-test.cpp",
            "function": "TEST_F"
        },
        "digest": {
            "length": 738.0,
            "function_hash": "52519532579298097849325176364313690990"
        }
    },
    {
        "signature_type": "Function",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-247491a3",
        "target": {
            "file": "src/svcli/svcli.cpp",
            "function": "main"
        },
        "digest": {
            "length": 3304.0,
            "function_hash": "287136748298044510105787214174865856235"
        }
    },
    {
        "signature_type": "Line",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-2694cb96",
        "target": {
            "file": "src/include/uthenticode.h"
        },
        "digest": {
            "line_hashes": [
                "224513235038466017800601904901210567836",
                "297058746041384752412942209383405866904",
                "71019581105866701291106949643958033113"
            ],
            "threshold": 0.9
        }
    },
    {
        "signature_type": "Function",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-3b634b47",
        "target": {
            "file": "test/uthenticode-test.cpp",
            "function": "TEST_F"
        },
        "digest": {
            "length": 738.0,
            "function_hash": "46240545201574304308004113642633584854"
        }
    },
    {
        "signature_type": "Line",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-7ca9830c",
        "target": {
            "file": "test/uthenticode-test.cpp"
        },
        "digest": {
            "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"
            ],
            "threshold": 0.9
        }
    },
    {
        "signature_type": "Function",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-804201a1",
        "target": {
            "file": "src/uthenticode.cpp",
            "function": "calculate_checksum"
        },
        "digest": {
            "length": 2122.0,
            "function_hash": "272765179330635670347885234307075202347"
        }
    },
    {
        "signature_type": "Line",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-8373b4eb",
        "target": {
            "file": "src/svcli/svcli.cpp"
        },
        "digest": {
            "line_hashes": [
                "139532799477733172794497460196999870794",
                "239362477940238872308977651283263702778",
                "250500780865551692864845635610512387104",
                "263869041646294982700062168001093247097"
            ],
            "threshold": 0.9
        }
    },
    {
        "signature_type": "Function",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-a9d3fbd7",
        "target": {
            "file": "test/uthenticode-test.cpp",
            "function": "TEST_F"
        },
        "digest": {
            "length": 738.0,
            "function_hash": "46240545201574304308004113642633584854"
        }
    },
    {
        "signature_type": "Function",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-c1919087",
        "target": {
            "file": "test/uthenticode-test.cpp",
            "function": "TEST_F"
        },
        "digest": {
            "length": 738.0,
            "function_hash": "243480121842989000028677669868346160518"
        }
    },
    {
        "signature_type": "Line",
        "source": "https://github.com/trailofbits/uthenticode/commit/8670b7bb9154d79c276483dcb7c9e9fd5e66455b",
        "signature_version": "v1",
        "deprecated": false,
        "id": "CVE-2023-39969-e1b93129",
        "target": {
            "file": "src/uthenticode.cpp"
        },
        "digest": {
            "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"
            ],
            "threshold": 0.9
        }
    }
]