cvelist/2018/14xxx/CVE-2018-14779.json

{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2018-14779",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A buffer overflow issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the function `ykpiv_transfer_data()`: {% highlight c %} if(*out_len + recv_len - 2 > max_out) { fprintf(stderr, \"Output buffer to small, wanted to write %lu, max was %lu.\", *out_len + recv_len - 2, max_out); } if(out_data) { memcpy(out_data, data, recv_len - 2); out_data += recv_len - 2; *out_len += recv_len - 2; } {% endhighlight %} -- it is clearly checked whether the buffer is big enough to hold the data copied using `memcpy()`, but no error handling happens to avoid the `memcpy()` in such cases. This code path can be triggered with malicious data coming from a smartcard."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://www.yubico.com/support/security-advisories/ysa-2018-03/",
                "refsource": "CONFIRM",
                "url": "https://www.yubico.com/support/security-advisories/ysa-2018-03/"
            },
            {
                "name": "https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/",
                "refsource": "MISC",
                "url": "https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/"
            },
            {
                "name": "[oss-security] 20180814 X41 D-Sec GmbH Security Advisory X41-2018-001: Multiple Vulnerabilities in Yubico Piv",
                "refsource": "MLIST",
                "url": "http://www.openwall.com/lists/oss-security/2018/08/14/2"
            },
            {
                "refsource": "UBUNTU",
                "name": "USN-4276-1",
                "url": "https://usn.ubuntu.com/4276-1/"
            }
        ]
    }
}