Vulnerability-Lookup

CNVD-2024-08097

Vulnerability from cnvd - Published: 2024-02-07

Title

Linux Kernel ksmbd SMB2_SESSION_SETUP拒绝服务漏洞

Description

Linux Kernel是一款流行的操作系统。 Linux Kernel ksmbd处理SMB2_SESSION_SETUP存在资源耗竭漏洞，远程攻击者可利用该漏洞提交特殊的请求，可使系统崩溃，造成拒绝服务攻击。

Severity

高

Patch Name

Linux Kernel ksmbd SMB2_SESSION_SETUP拒绝服务漏洞的补丁

Patch Description

Linux Kernel是一款流行的操作系统。 Linux Kernel ksmbd处理SMB2_SESSION_SETUP存在资源耗竭漏洞，远程攻击者可利用该漏洞提交特殊的请求，可使系统崩溃，造成拒绝服务攻击。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

用户可参考如下厂商提供的安全补丁以修复该漏洞： https://github.com/torvalds/linux/commit/ea174a91893956450510945a0c5d1a10b5323656

Reference

https://www.zerodayinitiative.com/advisories/ZDI-23-695/

Impacted products

Name
['Linux Linux kernel >=6.3，<6.3.2', 'Linux Linux kernel >=5.15，<=6.1.29', 'Linux Linux kernel >=6.2，<6.2.16']

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2023-32247",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2023-32247"
    }
  },
  "description": "Linux Kernel\u662f\u4e00\u6b3e\u6d41\u884c\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nLinux Kernel ksmbd\u5904\u7406SMB2_SESSION_SETUP\u5b58\u5728\u8d44\u6e90\u8017\u7aed\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u4ea4\u7279\u6b8a\u7684\u8bf7\u6c42\uff0c\u53ef\u4f7f\u7cfb\u7edf\u5d29\u6e83\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\u653b\u51fb\u3002",
  "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\nhttps://github.com/torvalds/linux/commit/ea174a91893956450510945a0c5d1a10b5323656",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2024-08097",
  "openTime": "2024-02-07",
  "patchDescription": "Linux Kernel\u662f\u4e00\u6b3e\u6d41\u884c\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nLinux Kernel ksmbd\u5904\u7406SMB2_SESSION_SETUP\u5b58\u5728\u8d44\u6e90\u8017\u7aed\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u63d0\u4ea4\u7279\u6b8a\u7684\u8bf7\u6c42\uff0c\u53ef\u4f7f\u7cfb\u7edf\u5d29\u6e83\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\u653b\u51fb\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 ksmbd SMB2_SESSION_SETUP\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Linux Linux kernel \u003e=6.3\uff0c\u003c6.3.2",
      "Linux Linux kernel \u003e=5.15\uff0c\u003c=6.1.29",
      "Linux Linux kernel \u003e=6.2\uff0c\u003c6.2.16"
    ]
  },
  "referenceLink": "https://www.zerodayinitiative.com/advisories/ZDI-23-695/",
  "serverity": "\u9ad8",
  "submitTime": "2023-05-22",
  "title": "Linux Kernel ksmbd SMB2_SESSION_SETUP\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2023-32247 (GCVE-0-2023-32247)

Vulnerability from cvelistv5 – Published: 2023-07-24 15:19 – Updated: 2024-08-02 15:10

Title

Session setup memory exhaustion denial-of-service vulnerability

Summary

A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_SESSION_SETUP commands. The issue results from the lack of control of resource consumption. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

redhat redhat root

References

4 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2023-32247	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2219803	issue-trackingx_refsource_REDHAT
https://security.netapp.com/advisory/ntap-2023091…
https://www.zerodayinitiative.com/advisories/ZDI-…

Impacted products

6 products

Vendor	Product	Version
n/a	kernel	Unaffected: 6.4-rc1
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Fedora	Fedora

Date Public

2023-05-04 00:00

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.

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.
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CNVD-2024-08097

CVE-2023-32247 (GCVE-0-2023-32247)

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Nomenclature

Related by attack behaviour