Vulnerability-Lookup

CNVD-2019-03428

Vulnerability from cnvd - Published: 2019-01-30

Title

GNU tar拒绝服务漏洞

Description

GNU Tar是GNU计划开发的一套用于创建tar格式文件的工具。 GNU Tar 1.30及之前版本中存在安全漏洞，该漏洞源于程序未能正确地处理文件的收缩过程。本地攻击者可通过修改文件利用该漏洞造成拒绝服务（sparse.c文件的‘sparse_dump_region’函数无限读取循环）。

Severity

低

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://www.gnu.org/software/tar/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-20482

Impacted products

Name
Gnu Tar <=1.30

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "106354"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-20482"
    }
  },
  "description": "GNU Tar\u662fGNU\u8ba1\u5212\u5f00\u53d1\u7684\u4e00\u5957\u7528\u4e8e\u521b\u5efatar\u683c\u5f0f\u6587\u4ef6\u7684\u5de5\u5177\u3002\n\nGNU Tar 1.30\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u5730\u5904\u7406\u6587\u4ef6\u7684\u6536\u7f29\u8fc7\u7a0b\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u4fee\u6539\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08sparse.c\u6587\u4ef6\u7684\u2018sparse_dump_region\u2019\u51fd\u6570\u65e0\u9650\u8bfb\u53d6\u5faa\u73af\uff09\u3002",
  "discovererName": "Chris Siebenmann",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://www.gnu.org/software/tar/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-03428",
  "openTime": "2019-01-30",
  "products": {
    "product": "Gnu Tar \u003c=1.30"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-20482",
  "serverity": "\u4f4e",
  "submitTime": "2018-12-27",
  "title": "GNU tar\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2018-20482 (GCVE-0-2018-20482)

Vulnerability from cvelistv5 – Published: 2018-12-26 18:00 – Updated: 2024-08-05 12:05

Summary

GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

10 references

URL	Tags
https://utcc.utoronto.ca/~cks/space/blog/sysadmin…	x_refsource_MISC
http://git.savannah.gnu.org/cgit/tar.git/commit/?…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://news.ycombinator.com/item?id=18745431	x_refsource_MISC
http://www.securityfocus.com/bid/106354	vdb-entryx_refsource_BID
https://security.gentoo.org/glsa/201903-05	vendor-advisoryx_refsource_GENTOO
http://lists.gnu.org/archive/html/bug-tar/2018-12…	x_refsource_MISC
https://twitter.com/thatcks/status/1076166645708668928	x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Date Public

2018-12-26 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.

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Action not permitted

CNVD-2019-03428

CVE-2018-20482 (GCVE-0-2018-20482)

Tags

Sightings

Nomenclature

Related by attack behaviour