cnvd - cnvd-2018-16941

CNVD-2018-16941

Vulnerability from cnvd - Published: 2018-08-30

Title

Yubico-Piv缓冲区溢出漏洞

Description

Yubico-Piv是一款用于对YubiKey的身份卡（PIV）应用程序进行交互的工具。 Yubico-Piv 1.5.0版本中的lib/ykpiv.c文件的‘ykpiv_transfer_data()’函数存在缓冲区溢出漏洞，该漏洞源于程序缺少错误处理机制。攻击者可借助来自智能卡的恶意数据利用该漏洞执行任意代码。

Severity

高

Patch Name

Yubico-Piv缓冲区溢出漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://www.yubico.com/support/security-advisories/ysa-2018-03/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-14779

Impacted products

Name
Yubico Yubico-Piv 1.5.0

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-14779"
    }
  },
  "description": "Yubico-Piv\u662f\u4e00\u6b3e\u7528\u4e8e\u5bf9YubiKey\u7684\u8eab\u4efd\u5361\uff08PIV\uff09\u5e94\u7528\u7a0b\u5e8f\u8fdb\u884c\u4ea4\u4e92\u7684\u5de5\u5177\u3002\r\n\r\nYubico-Piv 1.5.0\u7248\u672c\u4e2d\u7684lib/ykpiv.c\u6587\u4ef6\u7684\u2018ykpiv_transfer_data()\u2019\u51fd\u6570\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u7f3a\u5c11\u9519\u8bef\u5904\u7406\u673a\u5236\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u6765\u81ea\u667a\u80fd\u5361\u7684\u6076\u610f\u6570\u636e\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "discovererName": "unknwon",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.yubico.com/support/security-advisories/ysa-2018-03/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-16941",
  "openTime": "2018-08-30",
  "patchDescription": "Yubico-Piv\u662f\u4e00\u6b3e\u7528\u4e8e\u5bf9YubiKey\u7684\u8eab\u4efd\u5361\uff08PIV\uff09\u5e94\u7528\u7a0b\u5e8f\u8fdb\u884c\u4ea4\u4e92\u7684\u5de5\u5177\u3002\r\n\r\nYubico-Piv 1.5.0\u7248\u672c\u4e2d\u7684lib/ykpiv.c\u6587\u4ef6\u7684\u2018ykpiv_transfer_data()\u2019\u51fd\u6570\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u7f3a\u5c11\u9519\u8bef\u5904\u7406\u673a\u5236\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u6765\u81ea\u667a\u80fd\u5361\u7684\u6076\u610f\u6570\u636e\u5229\u7528\u8be5\u6f0f\u6d1e\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Yubico-Piv\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Yubico Yubico-Piv 1.5.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-14779",
  "serverity": "\u9ad8",
  "submitTime": "2018-08-17",
  "title": "Yubico-Piv\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2018-14779 (GCVE-0-2018-14779)

Vulnerability from cvelistv5 – Published: 2018-08-15 18:00 – Updated: 2024-08-05 09:38

Summary

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.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://www.yubico.com/support/security-advisorie…	x_refsource_CONFIRM
	https://www.x41-dsec.de/lab/advisories/x41-2018-0…	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2018/08/14/2	mailing-listx_refsource_MLIST
	https://usn.ubuntu.com/4276-1/	vendor-advisoryx_refsource_UBUNTU

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T09:38:13.960Z",
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      "descriptions": [
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          "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 \u003e 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."
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      ],
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          "url": "https://www.x41-dsec.de/lab/advisories/x41-2018-001-Yubico-Piv/"
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2018-16941

CVE-2018-14779 (GCVE-0-2018-14779)

Tags

Sightings

Nomenclature