Vulnerability-Lookup

CNVD-2021-54001

Vulnerability from cnvd - Published: 2021-07-23

Title

klibc输入验证错误漏洞（CNVD-2021-54001）

Description

klibc是一个应用软件。提供尽可能多地从内核空间中尽早启动的工作功能。 klibc 2.0.9之前版本存在输入验证错误漏洞，该漏洞源于cpio命令中的整数溢出可能导致在64位系统上取消引用NULL指针。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

klibc输入验证错误漏洞（CNVD-2021-54001）的补丁

Patch Description

klibc是一个应用软件。提供尽可能多地从内核空间中尽早启动的工作功能。 klibc 2.0.9之前版本存在输入验证错误漏洞，该漏洞源于cpio命令中的整数溢出可能导致在64位系统上取消引用NULL指针。目前没有详细的漏洞细节提供。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d43498c2d53e878a11a1b5102d5

Reference

https://kernel.org/pub/linux/libs/klibc/2.0/

Impacted products

Name
klibc klibc <2.0.9

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-31871",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-31871"
    }
  },
  "description": "klibc\u662f\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u63d0\u4f9b\u5c3d\u53ef\u80fd\u591a\u5730\u4ece\u5185\u6838\u7a7a\u95f4\u4e2d\u5c3d\u65e9\u542f\u52a8\u7684\u5de5\u4f5c\u529f\u80fd\u3002\n\nklibc 2.0.9\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecpio\u547d\u4ee4\u4e2d\u7684\u6574\u6570\u6ea2\u51fa\u53ef\u80fd\u5bfc\u81f4\u572864\u4f4d\u7cfb\u7edf\u4e0a\u53d6\u6d88\u5f15\u7528NULL\u6307\u9488\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d43498c2d53e878a11a1b5102d5",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-54001",
  "openTime": "2021-07-23",
  "patchDescription": "klibc\u662f\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u63d0\u4f9b\u5c3d\u53ef\u80fd\u591a\u5730\u4ece\u5185\u6838\u7a7a\u95f4\u4e2d\u5c3d\u65e9\u542f\u52a8\u7684\u5de5\u4f5c\u529f\u80fd\u3002\r\n\r\nklibc 2.0.9\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecpio\u547d\u4ee4\u4e2d\u7684\u6574\u6570\u6ea2\u51fa\u53ef\u80fd\u5bfc\u81f4\u572864\u4f4d\u7cfb\u7edf\u4e0a\u53d6\u6d88\u5f15\u7528NULL\u6307\u9488\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "klibc\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-54001\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "klibc klibc \u003c2.0.9"
  },
  "referenceLink": "https://kernel.org/pub/linux/libs/klibc/2.0/",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-11",
  "title": "klibc\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2021-54001\uff09"
}

CVE-2021-31871 (GCVE-0-2021-31871)

Vulnerability from cvelistv5 – Published: 2021-04-30 05:18 – Updated: 2024-08-03 23:10

Summary

An issue was discovered in klibc before 2.0.9. An integer overflow in the cpio command may result in a NULL pointer dereference on 64-bit systems.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2333 records in the last 180 days details

References

5 references

URL	Tags
https://kernel.org/pub/linux/libs/klibc/2.0/	x_refsource_MISC
https://lists.zytor.com/archives/klibc/2021-April…	x_refsource_MISC
https://git.kernel.org/pub/scm/libs/klibc/klibc.g…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/04/30/1	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

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{
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          "dateUpdated": "2024-08-03T23:10:30.764Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://kernel.org/pub/linux/libs/klibc/2.0/"
          },
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              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://lists.zytor.com/archives/klibc/2021-April/004593.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d43498c2d53e878a11a1b5102d5"
          },
          {
            "name": "[oss-security] 20210430 [ANNOUNCE] klibc 2.0.9",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/04/30/1"
          },
          {
            "name": "[debian-lts-announce] 20210628 [SECURITY] [DLA 2695-1] klibc security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html"
          }
        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
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          "vendor": "n/a",
          "versions": [
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          "url": "https://lists.zytor.com/archives/klibc/2021-April/004593.html"
        },
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          ],
          "url": "https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d43498c2d53e878a11a1b5102d5"
        },
        {
          "name": "[oss-security] 20210430 [ANNOUNCE] klibc 2.0.9",
          "tags": [
            "mailing-list",
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        },
        {
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              "url": "http://www.openwall.com/lists/oss-security/2021/04/30/1"
            },
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    "dateReserved": "2021-04-29T00:00:00.000Z",
    "dateUpdated": "2024-08-03T23:10:30.764Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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