Vulnerability-Lookup

CNVD-2017-07374

Vulnerability from cnvd - Published: 2017-05-24

Title

Linux kernel KEYS子系统拒绝服务漏洞

Description

Linux Kernel是Linux操作系统的内核。 Linux kernel 4.10.13之前的版本在KEYS子系统实现中存在拒绝服务漏洞，本地攻击者可利用该漏洞通过一系列KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring调用，造成拒绝服务（内存耗尽）。

Severity

中

Patch Name

Linux kernel KEYS子系统拒绝服务漏洞的补丁

Patch Description

Formal description

用户可参考如下厂商提供的安全补丁以修复该漏洞： http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c9f838d104fed6f2f61d68164712e3204bf5271b http://openwall.com/lists/oss-security/2017/05/11/1 https://bugzilla.novell.com/show_bug.cgi?id=1034862 https://github.com/torvalds/linux/commit/c9f838d104fed6f2f61d68164712e3204bf5271b https://lkml.org/lkml/2017/4/1/235 https://lkml.org/lkml/2017/4/3/724https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.13

Reference

https://nvd.nist.gov/vuln/detail/CVE-2017-7472

Impacted products

Name
Linux kernel <4.10.13

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-7472",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7472"
    }
  },
  "description": "Linux Kernel\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.10.13\u4e4b\u524d\u7684\u7248\u672c\u5728KEYS\u5b50\u7cfb\u7edf\u5b9e\u73b0\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u4e00\u7cfb\u5217KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring\u8c03\u7528\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5185\u5b58\u8017\u5c3d\uff09\u3002",
  "discovererName": "Marcus Meissner",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e\uff1a\r\nhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c9f838d104fed6f2f61d68164712e3204bf5271b\r\nhttp://openwall.com/lists/oss-security/2017/05/11/1\r\nhttps://bugzilla.novell.com/show_bug.cgi?id=1034862\r\nhttps://github.com/torvalds/linux/commit/c9f838d104fed6f2f61d68164712e3204bf5271b\r\nhttps://lkml.org/lkml/2017/4/1/235\r\nhttps://lkml.org/lkml/2017/4/3/724https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.13",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-07374",
  "openTime": "2017-05-24",
  "patchDescription": "Linux Kernel\u662fLinux\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.10.13\u4e4b\u524d\u7684\u7248\u672c\u5728KEYS\u5b50\u7cfb\u7edf\u5b9e\u73b0\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u4e00\u7cfb\u5217KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring\u8c03\u7528\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5185\u5b58\u8017\u5c3d\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 KEYS\u5b50\u7cfb\u7edf\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Linux kernel \u003c4.10.13"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-7472",
  "serverity": "\u4e2d",
  "submitTime": "2017-05-15",
  "title": "Linux kernel KEYS\u5b50\u7cfb\u7edf\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2017-7472 (GCVE-0-2017-7472)

Vulnerability from cvelistv5 – Published: 2017-05-11 19:00 – Updated: 2024-08-05 16:04

Summary

The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.

Severity

No CVSS data available.

CWE

exhaust kernel memory

Assigner

redhat redhat root

References

15 references

URL	Tags
http://git.kernel.org/cgit/linux/kernel/git/torva…	x_refsource_CONFIRM
https://lkml.org/lkml/2017/4/3/724	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:0181	vendor-advisoryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=1442086	x_refsource_CONFIRM
https://www.kernel.org/pub/linux/kernel/v4.x/Chan…	x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://access.redhat.com/errata/RHSA-2018:0152	vendor-advisoryx_refsource_REDHAT
https://github.com/torvalds/linux/commit/c9f838d1…	x_refsource_CONFIRM
http://www.securityfocus.com/bid/98422	vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1038471	vdb-entryx_refsource_SECTRACK
https://bugzilla.novell.com/show_bug.cgi?id=1034862	x_refsource_CONFIRM
https://www.exploit-db.com/exploits/42136/	exploitx_refsource_EXPLOIT-DB
http://openwall.com/lists/oss-security/2017/05/11/1	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:0151	vendor-advisoryx_refsource_REDHAT
https://lkml.org/lkml/2017/4/1/235	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
n/a	Linux kernel before 4.10.13	Affected: Linux kernel before 4.10.13

Date Public

2017-05-11 00:00

Show details on NVD website

JSON

To clipboard

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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.
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CNVD-2017-07374

CVE-2017-7472 (GCVE-0-2017-7472)

Tags

Sightings

Nomenclature

Related by attack behaviour