Vulnerability-Lookup

CNVD-2025-17798

Vulnerability from cnvd - Published: 2025-08-07

Title

GNU Tar目录遍历漏洞

Description

GNU Tar是美国GNU社区的一套用于创建tar格式文件的工具。 GNU Tar存在目录遍历漏洞，该漏洞源于特制TAR存档中的目录遍历，攻击者可利用该漏洞访问受限目录之外的位置，获取系统配置文件。

Severity

低

Formal description

厂商尚未发布漏洞修复程序，请及时关注更新： https://www.gnu.org/software/tar/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-45582

Impacted products

Name
Gnu Tar <1.35

Show details on source website

JSON

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-45582",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-45582"
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  "formalWay": "\u5382\u5546\u5c1a\u672a\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.gnu.org/software/tar/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-17798",
  "openTime": "2025-08-07",
  "products": {
    "product": "Gnu Tar \u003c1.35"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-45582",
  "serverity": "\u4f4e",
  "submitTime": "2025-07-23",
  "title": "GNU Tar\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e"
}

CVE-2025-45582 (GCVE-0-2025-45582)

Vulnerability from cvelistv5 – Published: 2025-07-11 00:00 – Updated: 2025-11-02 00:12

Summary

GNU Tar through 1.35 allows file overwrite via directory traversal in crafted TAR archives, with a certain two-step process. First, the victim must extract an archive that contains a ../ symlink to a critical directory. Second, the victim must extract an archive that contains a critical file, specified via a relative pathname that begins with the symlink name and ends with that critical file's name. Here, the extraction follows the symlink and overwrites the critical file. This bypasses the protection mechanism of "Member name contains '..'" that would occur for a single TAR archive that attempted to specify the critical file via a ../ approach. For example, the first archive can contain "x -> ../../../../../home/victim/.ssh" and the second archive can contain x/authorized_keys. This can affect server applications that automatically extract any number of user-supplied TAR archives, and were relying on the blocking of traversal. This can also affect software installation processes in which "tar xf" is run more than once (e.g., when installing a package can automatically install two dependencies that are set up as untrusted tarballs instead of official packages). NOTE: the official GNU Tar manual has an otherwise-empty directory for each "tar xf" in its Security Rules of Thumb; however, third-party advice leads users to run "tar xf" more than once into the same directory.

Severity

4.1 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-11 18:27 UTC

CWE

CWE-24 - Path Traversal: '../filedir'

Assigner

mitre mitre root

References

6 references

URL	Tags
https://github.com/i900008/vulndb/blob/main/Gnu_t…
https://www.gnu.org/software/tar/
https://www.gnu.org/software/tar/manual/html_node…
https://www.gnu.org/software/tar/manual/html_node…
https://lists.gnu.org/archive/html/bug-tar/2025-0…
http://www.openwall.com/lists/oss-security/2025/11/01/6

Impacted products

1 product

Vendor	Product	Version
GNU	Tar	Affected: 0 , ≤ 1.35 (custom) cpe:2.3:a:gnu:tar::::::::

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.
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.