Vulnerability-Lookup

CNVD-2018-07284

Vulnerability from cnvd - Published: 2018-04-09

Title

Linux kernel 'ext4_iget'函数拒绝服务漏洞

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 4.15.15及之前的版本中的fs/ext4/inode.c文件的'ext4_iget'函数存在安全漏洞。攻击者可借助特制的ext4图像利用该漏洞造成拒绝服务（‘ext4_process_freed_data’函数空指针逆向引用）。

Severity

中

Patch Name

Linux kernel 'ext4_iget'函数拒绝服务漏洞的补丁

Patch Description

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-1092

Impacted products

Name
kernel.org Linux kernel <=4.15.15

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-1092"
    }
  },
  "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\r\n\r\nLinux kernel 4.15.15\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684fs/ext4/inode.c\u6587\u4ef6\u7684\u0027ext4_iget\u0027\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684ext4\u56fe\u50cf\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u2018ext4_process_freed_data\u2019\u51fd\u6570\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\u3002",
  "discovererName": "unknwon",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=8e4b5eae5decd9dfe5a4ee369c22028f90ab4c44",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-07284",
  "openTime": "2018-04-09",
  "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 4.15.15\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u7684fs/ext4/inode.c\u6587\u4ef6\u7684\u0027ext4_iget\u0027\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684ext4\u56fe\u50cf\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u2018ext4_process_freed_data\u2019\u51fd\u6570\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\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 \u0027ext4_iget\u0027\u51fd\u6570\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "kernel.org Linux kernel \u003c=4.15.15"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-1092",
  "serverity": "\u4e2d",
  "submitTime": "2018-04-02",
  "title": "Linux kernel \u0027ext4_iget\u0027\u51fd\u6570\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2018-1092 (GCVE-0-2018-1092)

Vulnerability from cvelistv5 – Published: 2018-04-02 03:00 – Updated: 2024-08-05 03:51

Summary

The ext4_iget function in fs/ext4/inode.c in the Linux kernel through 4.15.15 mishandles the case of a root directory with a zero i_links_count, which allows attackers to cause a denial of service (ext4_process_freed_data NULL pointer dereference and OOPS) via a crafted ext4 image.

Severity

No CVSS data available.

CWE

NULL pointer dereference

Assigner

redhat redhat root

References

20 references

URL	Tags
https://usn.ubuntu.com/3676-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3678-2/	vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3083	vendor-advisoryx_refsource_REDHAT
http://openwall.com/lists/oss-security/2018/03/29/1	x_refsource_MISC
https://www.debian.org/security/2018/dsa-4187	vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3678-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3677-1/	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2018/dsa-4188	vendor-advisoryx_refsource_DEBIAN
https://usn.ubuntu.com/3754-1/	vendor-advisoryx_refsource_UBUNTU
https://bugzilla.kernel.org/show_bug.cgi?id=199179	x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:2948	vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3678-3/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3677-2/	vendor-advisoryx_refsource_UBUNTU
https://bugzilla.redhat.com/show_bug.cgi?id=1560777	x_refsource_MISC
https://usn.ubuntu.com/3676-2/	vendor-advisoryx_refsource_UBUNTU
https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2018:3096	vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3678-4/	vendor-advisoryx_refsource_UBUNTU
https://bugzilla.kernel.org/show_bug.cgi?id=199275	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Linux kernel through version 4.15	Affected: Linux kernel through version 4.15

Date Public

2018-04-01 00:00

Show details on NVD website

JSON

To clipboard

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          "name": "USN-3678-2",
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          "name": "RHSA-2018:3083",
          "tags": [
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            "x_refsource_DEBIAN"
          ],
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        },
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          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3678-1/"
        },
        {
          "name": "USN-3677-1",
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          "tags": [
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            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3754-1/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
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        },
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          "name": "RHSA-2018:2948",
          "tags": [
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        {
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          "tags": [
            "vendor-advisory",
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        {
          "tags": [
            "x_refsource_MISC"
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1560777"
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        {
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          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
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        },
        {
          "name": "[debian-lts-announce] 20180502 [SECURITY] [DLA 1369-1] linux security update",
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            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html"
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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.