Vulnerability-Lookup

CNVD-2020-52183

Vulnerability from cnvd - Published: 2020-09-16

Title

Linux kernel权限控制漏洞

Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 5.8.9中存在权限控制漏洞。该漏洞源于driver /block/ rbdc中的rbd块设备驱动程序使用了不完整的权限检查来访问rbd设备。攻击者可利用该漏洞提升权限。

Severity

高

Patch Name

Linux kernel权限控制漏洞的补丁

Patch Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 5.8.9 中存在权限控制漏洞。该漏洞源于driver /block/ rbdc中的rbd块设备驱动程序使用了不完整的权限检查来访问rbd设备。攻击者可利用该漏洞提升权限。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f44d04e696feaf13d192d942c4f14ad2e117065a

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-25284

Impacted products

Name
Linux Linux kernel 5.8.9

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-25284",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-25284"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel 5.8.9\u4e2d\u5b58\u5728\u6743\u9650\u63a7\u5236\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8edriver /block/ rbdc\u4e2d\u7684rbd\u5757\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u4f7f\u7528\u4e86\u4e0d\u5b8c\u6574\u7684\u6743\u9650\u68c0\u67e5\u6765\u8bbf\u95eerbd\u8bbe\u5907\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u6743\u9650\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f44d04e696feaf13d192d942c4f14ad2e117065a",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-52183",
  "openTime": "2020-09-16",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 5.8.9 \u4e2d\u5b58\u5728\u6743\u9650\u63a7\u5236\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8edriver /block/ rbdc\u4e2d\u7684rbd\u5757\u8bbe\u5907\u9a71\u52a8\u7a0b\u5e8f\u4f7f\u7528\u4e86\u4e0d\u5b8c\u6574\u7684\u6743\u9650\u68c0\u67e5\u6765\u8bbf\u95eerbd\u8bbe\u5907\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u5347\u6743\u9650\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": "Linux kernel\u6743\u9650\u63a7\u5236\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Linux kernel 5.8.9"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-25284",
  "serverity": "\u9ad8",
  "submitTime": "2020-09-15",
  "title": "Linux kernel\u6743\u9650\u63a7\u5236\u6f0f\u6d1e"
}

CVE-2020-25284 (GCVE-0-2020-25284)

Vulnerability from cvelistv5 – Published: 2020-09-13 17:28 – Updated: 2024-08-04 15:33

Summary

The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap rbd block devices, aka CID-f44d04e696fe.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

7 references

URL	Tags
https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_MISC
https://twitter.com/grsecurity/status/13045375075…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

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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.

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.

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CNVD-2020-52183

CVE-2020-25284 (GCVE-0-2020-25284)

Tags

Sightings

Nomenclature

Related by attack behaviour