CVE-2020-26572

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Source
https://nvd.nist.gov/vuln/detail/CVE-2020-26572
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26572.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-26572
Downstream
Related
Published
2020-10-06T02:15:13.130Z
Modified
2025-11-14T11:01:56.481532Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

The TCOS smart card software driver in OpenSC before 0.21.0-rc1 has a stack-based buffer overflow in tcos_decipher.

References

Affected packages

Git / github.com/opensc/opensc

Affected ranges

Type
GIT
Repo
https://github.com/opensc/opensc
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9d294de90d1cc66956389856e60b6944b27b4817

Affected versions

0.*

0.12.2
0.12.2-rc1
0.13.0
0.13.0pre1
0.13.0rc1
0.14.0
0.14.0rc2
0.14.0rtm
0.15.0
0.16.0
0.16.0-rc1
0.16.0-rc2
0.17.0
0.17.0-rc1
0.17.0-rc2
0.18.0
0.18.0-rc1
0.18.0-rc2
0.19.0
0.19.0-rc1
0.20.0
0.20.0-rc1
0.20.0-rc2
0.20.0-rc3
0.20.0-rc4

v0.*

v0.12.2
v0.16.0-pre1

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26572.json"

vanir_signatures

[
    {
        "target": {
            "file": "src/libopensc/card-tcos.c"
        },
        "deprecated": false,
        "id": "CVE-2020-26572-70cc3a8b",
        "digest": {
            "line_hashes": [
                "58466695333159636353363207331574836164",
                "202577461546426578785310313971106836046",
                "284255860012804969870862664979029655002",
                "139437758083297902526057034584382767580"
            ],
            "threshold": 0.9
        },
        "signature_type": "Line",
        "source": "https://github.com/opensc/opensc/commit/9d294de90d1cc66956389856e60b6944b27b4817",
        "signature_version": "v1"
    },
    {
        "target": {
            "function": "tcos_decipher",
            "file": "src/libopensc/card-tcos.c"
        },
        "deprecated": false,
        "id": "CVE-2020-26572-cb06db58",
        "digest": {
            "length": 1581.0,
            "function_hash": "114247950551260681955303043934807423823"
        },
        "signature_type": "Function",
        "source": "https://github.com/opensc/opensc/commit/9d294de90d1cc66956389856e60b6944b27b4817",
        "signature_version": "v1"
    }
]