Vulnerability-Lookup

CNVD-2018-21505

Vulnerability from cnvd - Published: 2018-10-23

Title

elfutils拒绝服务漏洞（CNVD-2018-21505）

Description

elfutils是一套用于读取、创建和修改ELF二进制文件的实用程序和库的集合。 elfutils 0.174及之前版本中的libelf的‘elf_end’函数存在安全漏洞，该漏洞源于虽然eu-size用于处理ar文件中的ar文件，而在未能处理完所有的内部条目之前，size.c中的handle_ar就关闭了外部的ar文件。攻击者可借助特制的ELF文件利用该漏洞造成拒绝服务（应用程序崩溃）。

Severity

中

Formal description

目前厂商暂未发布修复措施解决此安全问题，建议使用此软件的用户随时关注厂商主页或参考网址以获取解决办法： https://sourceware.org/elfutils/

Reference

https://vuldb.com/?id.125822

Impacted products

Name
Elfutils Elfutils <=0.174

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-18520"
    }
  },
  "description": "elfutils\u662f\u4e00\u5957\u7528\u4e8e\u8bfb\u53d6\u3001\u521b\u5efa\u548c\u4fee\u6539ELF\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u5b9e\u7528\u7a0b\u5e8f\u548c\u5e93\u7684\u96c6\u5408\u3002\r\n\r\nelfutils 0.174\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684libelf\u7684\u2018elf_end\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u867d\u7136eu-size\u7528\u4e8e\u5904\u7406ar\u6587\u4ef6\u4e2d\u7684ar\u6587\u4ef6\uff0c\u800c\u5728\u672a\u80fd\u5904\u7406\u5b8c\u6240\u6709\u7684\u5185\u90e8\u6761\u76ee\u4e4b\u524d\uff0csize.c\u4e2d\u7684handle_ar\u5c31\u5173\u95ed\u4e86\u5916\u90e8\u7684ar\u6587\u4ef6\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684ELF\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff09\u3002",
  "discovererName": "unknown",
  "formalWay": "\u76ee\u524d\u5382\u5546\u6682\u672a\u53d1\u5e03\u4fee\u590d\u63aa\u65bd\u89e3\u51b3\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u5efa\u8bae\u4f7f\u7528\u6b64\u8f6f\u4ef6\u7684\u7528\u6237\u968f\u65f6\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u6216\u53c2\u8003\u7f51\u5740\u4ee5\u83b7\u53d6\u89e3\u51b3\u529e\u6cd5\uff1a\r\nhttps://sourceware.org/elfutils/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-21505",
  "openTime": "2018-10-23",
  "products": {
    "product": "Elfutils Elfutils \u003c=0.174"
  },
  "referenceLink": "https://vuldb.com/?id.125822",
  "serverity": "\u4e2d",
  "submitTime": "2018-10-23",
  "title": "elfutils\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-21505\uff09"
}

CVE-2018-18520 (GCVE-0-2018-18520)

Vulnerability from cvelistv5 – Published: 2018-10-19 17:00 – Updated: 2024-08-05 11:15

Summary

An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

7 references

URL	Tags
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
https://sourceware.org/ml/elfutils-devel/2018-q4/…	x_refsource_MISC
https://sourceware.org/bugzilla/show_bug.cgi?id=23787	x_refsource_MISC
https://usn.ubuntu.com/4012-1/	vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://access.redhat.com/errata/RHSA-2019:2197	vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Date Public

2018-10-19 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.

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.