Vulnerability-Lookup

CNVD-2017-38261

Vulnerability from cnvd - Published: 2017-12-27

Title

QEMU 'b/nbd/server.c'栈缓冲区溢出漏洞

Description

QEMU（又名Quick Emulator）是法国程序员法布里斯-贝拉（Fabrice Bellard）所研发的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU 'b/nbd/server.c'存在栈缓冲区溢出漏洞，该漏洞源于程序未能正确的对用户提交的数据执行边界检测，导致复制数据的大小超过了分配的缓冲区内存空间。攻击者可利用该漏洞造成拒绝服务（QEMU实例崩溃）。

Severity

高

Patch Name

QEMU 'b/nbd/server.c'栈缓冲区溢出漏洞的补丁

Patch Description

Formal description

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： http://wiki.qemu.org/Main_Page https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.html https://access.redhat.com/security/cve/cve-2017-15118 https://bugzilla.redhat.com/show_bug.cgi?id=1516922

Reference

http://www.securityfocus.com/bid/101975

Impacted products

Name
QEMU QEMU 0

Show details on source website

JSON

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    "bid": {
      "bidNumber": "101975"
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    "cve": {
      "cveNumber": "CVE-2017-15118"
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  "discovererName": "Eric Blake",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u5230\u5382\u5546\u7684\u4e3b\u9875\u4e0b\u8f7d\uff1a\r\nhttp://wiki.qemu.org/Main_Page\r\nhttps://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05045.html\r\nhttps://access.redhat.com/security/cve/cve-2017-15118\r\nhttps://bugzilla.redhat.com/show_bug.cgi?id=1516922",
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  "number": "CNVD-2017-38261",
  "openTime": "2017-12-27",
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  "products": {
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  "referenceLink": "http://www.securityfocus.com/bid/101975",
  "serverity": "\u9ad8",
  "submitTime": "2017-11-30",
  "title": "QEMU \u0027b/nbd/server.c\u0027\u6808\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2017-15118 (GCVE-0-2017-15118)

Vulnerability from cvelistv5 – Published: 2018-07-27 21:00 – Updated: 2024-08-05 19:50

Summary

A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an export name of size up to 4096 bytes, which in fact should be limited to 256 bytes, causing an out-of-bounds stack write in the qemu process. If NBD server requires TLS, the attacker cannot trigger the buffer overflow without first successfully negotiating TLS.

Severity

8.3 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

CWE

CWE-121

Assigner

redhat redhat root

References

7 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:1104	vendor-advisoryx_refsource_REDHAT
https://lists.gnu.org/archive/html/qemu-devel/201…	x_refsource_MISC
https://usn.ubuntu.com/3575-1/	vendor-advisoryx_refsource_UBUNTU
http://www.securityfocus.com/bid/101975	vdb-entryx_refsource_BID
http://www.openwall.com/lists/oss-security/2017/11/28/8	x_refsource_MISC
https://www.exploit-db.com/exploits/43194/	exploitx_refsource_EXPLOIT-DB

Impacted products

1 product

Vendor	Product	Version
QEMU	Qemu	Affected: 2.11

Date Public

2017-11-23 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.

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-2017-38261

CVE-2017-15118 (GCVE-0-2017-15118)

Tags

Sightings

Nomenclature

Related by attack behaviour