Vulnerability-Lookup

CNVD-2016-01042

Vulnerability from cnvd - Published: 2016-02-17

Title

Linux kernel权限提升漏洞（CNVD-2016-01042）

Description

Linux kernel是一个开源，自由的操作系统核心，最初由Linus Torvalds完成。 Linux kernel 4.4.1及之前版本的kernel/ptrace.c文件中存在安全漏洞，该漏洞源于程序未能正确处理uid和gid映射。本地攻击者可通过建立用户命名空间，等待root进程使用不安全的uid或gid进入该命名空间后使用ptrace系统调用，利用该漏洞获取权限。

Severity

中

Patch Name

Linux kernel权限提升漏洞（CNVD-2016-01042）的补丁

Patch Description

Formal description

用户可参考如下厂商提供的安全公告获取补丁以修复该漏洞： http://marc.info/?l=linux-kernel&m=145204641422813&w=2

Reference

http://marc.info/?l=linux-kernel&m=145204641422813&w=2

Impacted products

Name
Linux Kernel <4.4.1

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "79899"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2015-8709"
    }
  },
  "description": "Linux kernel\u662f\u4e00\u4e2a\u5f00\u6e90\uff0c\u81ea\u7531\u7684\u64cd\u4f5c\u7cfb\u7edf\u6838\u5fc3\uff0c\u6700\u521d\u7531Linus Torvalds\u5b8c\u6210\u3002\r\n\r\nLinux kernel 4.4.1\u53ca\u4e4b\u524d\u7248\u672c\u7684kernel/ptrace.c\u6587\u4ef6\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5904\u7406uid\u548cgid\u6620\u5c04\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5efa\u7acb\u7528\u6237\u547d\u540d\u7a7a\u95f4\uff0c\u7b49\u5f85root\u8fdb\u7a0b\u4f7f\u7528\u4e0d\u5b89\u5168\u7684uid\u6216gid\u8fdb\u5165\u8be5\u547d\u540d\u7a7a\u95f4\u540e\u4f7f\u7528ptrace\u7cfb\u7edf\u8c03\u7528\uff0c\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u6743\u9650\u3002",
  "discovererName": "Jann Horn",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u516c\u544a\u83b7\u53d6\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttp://marc.info/?l=linux-kernel\u0026m=145204641422813\u0026w=2",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-01042",
  "openTime": "2016-02-17",
  "patchDescription": "Linux kernel\u662f\u4e00\u4e2a\u5f00\u6e90\uff0c\u81ea\u7531\u7684\u64cd\u4f5c\u7cfb\u7edf\u6838\u5fc3\uff0c\u6700\u521d\u7531Linus Torvalds\u5b8c\u6210\u3002\r\n\r\nLinux kernel 4.4.1\u53ca\u4e4b\u524d\u7248\u672c\u7684kernel/ptrace.c\u6587\u4ef6\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5904\u7406uid\u548cgid\u6620\u5c04\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5efa\u7acb\u7528\u6237\u547d\u540d\u7a7a\u95f4\uff0c\u7b49\u5f85root\u8fdb\u7a0b\u4f7f\u7528\u4e0d\u5b89\u5168\u7684uid\u6216gid\u8fdb\u5165\u8be5\u547d\u540d\u7a7a\u95f4\u540e\u4f7f\u7528ptrace\u7cfb\u7edf\u8c03\u7528\uff0c\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\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\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2016-01042\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c4.4.1"
  },
  "referenceLink": "http://marc.info/?l=linux-kernel\u0026m=145204641422813\u0026w=2",
  "serverity": "\u4e2d",
  "submitTime": "2016-02-11",
  "title": "Linux kernel\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\uff08CNVD-2016-01042\uff09"
}

CVE-2015-8709 (GCVE-0-2015-8709)

Vulnerability from cvelistv5 – Published: 2016-02-08 02:00 – Updated: 2024-08-06 08:29 Disputed

Summary

kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call. NOTE: the vendor states "there is no kernel bug here.

Severity

No CVSS data available.

CWE

Assigner

debian mitre root

References

25 references

URL	Tags
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lkml.org/lkml/2015/12/25/71	mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://marc.info/?l=linux-kernel&m=145204641422813&w=2	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
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://www.openwall.com/lists/oss-security/2015/12/31/5	mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2015/1…	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
http://marc.info/?l=linux-kernel&m=145204362722256&w=2	mailing-listx_refsource_MLIST
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://www.securityfocus.com/bid/79899	vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1034899	vdb-entryx_refsource_SECTRACK
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://bugzilla.redhat.com/show_bug.cgi?id=1295287	x_refsource_CONFIRM
http://www.debian.org/security/2016/dsa-3434	vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE

Date Public

2015-12-17 00:00

Show details on NVD website

JSON

To clipboard

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        },
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          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html"
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          "name": "SUSE-SU-2016:1041",
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          "name": "SUSE-SU-2016:1046",
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          "url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html"
        },
        {
          "name": "79899",
          "tags": [
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            "x_refsource_BID"
          ],
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        },
        {
          "name": "1034899",
          "tags": [
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          ],
          "url": "http://www.securitytracker.com/id/1034899"
        },
        {
          "name": "openSUSE-SU-2016:1008",
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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.

Detection rules are retrieved from Rulezet.

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.