CVE-2019-12209

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Source
https://nvd.nist.gov/vuln/detail/CVE-2019-12209
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-12209.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2019-12209
Downstream
Related
Published
2019-06-04T21:29:00Z
Modified
2025-09-19T10:22:02.439568Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.

References

Affected packages

Git / github.com/yubico/pam-u2f

Affected ranges

Type
GIT
Repo
https://github.com/yubico/pam-u2f
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3

Affected versions

pam_u2f-0.*

pam_u2f-0.0.0
pam_u2f-0.0.1

pam_u2f-1.*

pam_u2f-1.0.0
pam_u2f-1.0.1
pam_u2f-1.0.2
pam_u2f-1.0.3
pam_u2f-1.0.4
pam_u2f-1.0.5
pam_u2f-1.0.6
pam_u2f-1.0.7

Database specific 

{
    "vanir_signatures": [
        {
            "id": "CVE-2019-12209-4c8a7ade",
            "source": "https://github.com/yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3",
            "deprecated": false,
            "signature_type": "Function",
            "target": {
                "file": "pam-u2f.c",
                "function": "pam_sm_authenticate"
            },
            "signature_version": "v1",
            "digest": {
                "function_hash": "190092078713224981052794975657320798984",
                "length": 6318.0
            }
        },
        {
            "id": "CVE-2019-12209-ee50519a",
            "source": "https://github.com/yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3",
            "deprecated": false,
            "signature_type": "Line",
            "target": {
                "file": "pam-u2f.c"
            },
            "signature_version": "v1",
            "digest": {
                "line_hashes": [
                    "250296066536919154674839163851516765508",
                    "59111452786323337913235261308682888245",
                    "141044651560406762454417501895253739569",
                    "126359054032938080789565256505569180900",
                    "220714864252976379688803145502688475012",
                    "106159406315499737346394770900863707770",
                    "33522756926003101309545187513930969527",
                    "71702326451260424737668205123381200191",
                    "327611880822787244142960116790272837488",
                    "231305736634594726001346628114074859277",
                    "163955949941476732340365084568922478628",
                    "322001690522104487392124877961531480196",
                    "122917560062141683582688657772822747687",
                    "138199726908497305244528752739313264649",
                    "77341871531213007699954046010910951287",
                    "224655575939885664906704728675255897797",
                    "303699464452316472783995436624293889408",
                    "171407542727841768998135646367153085064",
                    "1040401220391752097814007081848542318",
                    "27912806870969979261286961349193397318",
                    "63398289410222910950184796916234250752",
                    "209995171977491762399505741862331115317",
                    "21294114663909744224471564370406630954",
                    "299827442378922536678566154607701600472",
                    "249561506344594180486237785878278908893",
                    "64279706059051126987763302622989764325",
                    "89674261969872805465078510751477079537",
                    "64496481663788244759487716129584999689",
                    "283495615230663756794873339859325689751",
                    "97165761981535877271425842949349045261",
                    "306263898074518652377612561231518689404",
                    "81716346068354327908223233647390249550",
                    "53268192210624865124009940222692962583",
                    "274145719533260958364818024938258751394",
                    "85329958743355470946491303329051581321",
                    "194649338004069832641504185077214101845",
                    "179836419267729583861045579456958088413",
                    "58948533126361249229327132606155567887",
                    "81142259067198053490984316876348911071",
                    "314485511235383047367974874029533144611",
                    "329875576775740086332656653605590857954",
                    "133935251841805499863157142127834629482",
                    "159044414741092336700454310254793686751"
                ],
                "threshold": 0.9
            }
        }
    ]
}