Vulnerability-Lookup

GHSA-VVJP-Q62M-2VPH

Vulnerability from github – Published: 2023-11-09 18:34 – Updated: 2023-11-17 18:30

Details

The filepath package does not recognize paths with a \??\ prefix as special. On Windows, a path beginning with \??\ is a Root Local Device path equivalent to a path beginning with \?. Paths with a \??\ prefix may be used to access arbitrary locations on the system. For example, the path \??\c:\x is equivalent to the more common path c:\x. Before fix, Clean could convert a rooted path such as \a..\??\b into the root local device path \??\b. Clean will now convert this to .\??\b. Similarly, Join(\, ??, b) could convert a seemingly innocent sequence of path elements into the root local device path \??\b. Join will now convert this to .\??\b. In addition, with fix, IsAbs now correctly reports paths beginning with \??\ as absolute, and VolumeName correctly reports the \??\ prefix as a volume name.

Severity

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-45283"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
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    "github_reviewed_at": null,
    "nvd_published_at": "2023-11-09T17:15:08Z",
    "severity": "HIGH"
  },
  "details": "The filepath package does not recognize paths with a \\??\\ prefix as special. On Windows, a path beginning with \\??\\ is a Root Local Device path equivalent to a path beginning with \\\\?\\. Paths with a \\??\\ prefix may be used to access arbitrary locations on the system. For example, the path \\??\\c:\\x is equivalent to the more common path c:\\x. Before fix, Clean could convert a rooted path such as \\a\\..\\??\\b into the root local device path \\??\\b. Clean will now convert this to .\\??\\b. Similarly, Join(\\, ??, b) could convert a seemingly innocent sequence of path elements into the root local device path \\??\\b. Join will now convert this to \\.\\??\\b. In addition, with fix, IsAbs now correctly reports paths beginning with \\??\\ as absolute, and VolumeName correctly reports the \\??\\ prefix as a volume name.",
  "id": "GHSA-vvjp-q62m-2vph",
  "modified": "2023-11-17T18:30:49Z",
  "published": "2023-11-09T18:34:55Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45283"
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      "url": "https://go.dev/cl/540277"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/cl/541175"
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      "url": "https://go.dev/issue/64028"
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      "type": "WEB",
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}

CVE-2023-45283 (GCVE-0-2023-45283)

Vulnerability from cvelistv5 – Published: 2023-11-09 16:30 – Updated: 2025-02-13 17:13

Title

Insecure parsing of Windows paths with a \??\ prefix in path/filepath

Summary

The filepath package does not recognize paths with a \??\ prefix as special. On Windows, a path beginning with \??\ is a Root Local Device path equivalent to a path beginning with \\?\. Paths with a \??\ prefix may be used to access arbitrary locations on the system. For example, the path \??\c:\x is equivalent to the more common path c:\x. Before fix, Clean could convert a rooted path such as \a\..\??\b into the root local device path \??\b. Clean will now convert this to .\??\b. Similarly, Join(\, ??, b) could convert a seemingly innocent sequence of path elements into the root local device path \??\b. Join will now convert this to \.\??\b. In addition, with fix, IsAbs now correctly reports paths beginning with \??\ as absolute, and VolumeName correctly reports the \??\ prefix as a volume name. UPDATE: Go 1.20.11 and Go 1.21.4 inadvertently changed the definition of the volume name in Windows paths starting with \?, resulting in filepath.Clean(\?\c:) returning \?\c: rather than \?\c:\ (among other effects). The previous behavior has been restored.

Severity

No CVSS data available.

CWE

CWE-41 - Improper Resolution of Path Equivalence

Assigner

Go CNA under the Google root

CNA scorecard E 42/100 over 64 records in the last 180 days details

References

9 references

URL	Tags
https://go.dev/issue/63713
https://go.dev/cl/540277
https://groups.google.com/g/golang-announce/c/4tU…
https://go.dev/issue/64028
https://go.dev/cl/541175
https://groups.google.com/g/golang-dev/c/6ypN5Eji…
https://pkg.go.dev/vuln/GO-2023-2185
http://www.openwall.com/lists/oss-security/2023/12/05/2
https://security.netapp.com/advisory/ntap-2023121…

Impacted products

3 products

Vendor	Product	Version
Go standard library	path/filepath	Affected: 0 , < 1.20.11 (semver) Affected: 1.21.0-0 , < 1.21.4 (semver)
Go standard library	internal/safefilepath	Affected: 0 , < 1.20.11 (semver) Affected: 1.21.0-0 , < 1.21.4 (semver)
Go standard library	path/filepath	Affected: 1.20.11 , < 1.20.12 (semver) Affected: 1.21.4 , < 1.21.5 (semver)

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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.

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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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