github - ghsa-2c4f-vgwr-82q6

ghsa-2c4f-vgwr-82q6

Vulnerability from github

Published

2023-07-21 21:30

Modified

2024-04-04 06:18

Severity ?

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

Details

A missing allocation check in sftp server processing read requests may cause a NULL dereference on low-memory conditions. The malicious client can request up to 4GB SFTP reads, causing allocation of up to 4GB buffers, which was not being checked for failure. This will likely crash the authenticated user's sftp server connection (if implemented as forking as recommended). For thread-based servers, this might also cause DoS for legitimate users.

Given this code is not in any released versions, no security releases have been issued.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-3603"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476",
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-07-21T20:15:16Z",
    "severity": "MODERATE"
  },
  "details": "A missing allocation check in sftp server processing read requests may cause a NULL dereference on low-memory conditions. The malicious client can request up to 4GB SFTP reads, causing allocation of up to 4GB buffers, which was not being checked for failure. This will likely crash the authenticated user\u0027s sftp server connection (if implemented as forking as recommended). For thread-based servers, this might also cause DoS for legitimate users.\n\nGiven this code is not in any released versions, no security releases have been issued.",
  "id": "GHSA-2c4f-vgwr-82q6",
  "modified": "2024-04-04T06:18:44Z",
  "published": "2023-07-21T21:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3603"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2023-3603"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2221791"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

cve-2023-3603

Vulnerability from cvelistv5

Published

2023-07-21 19:09

Modified

2024-09-26 20:04

Severity ?

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

Summary

Processing sftp server read may cause null dereference

References

▼	URL	Tags
	https://access.redhat.com/security/cve/CVE-2023-3603	vdb-entry, x_refsource_REDHAT
	https://bugzilla.redhat.com/show_bug.cgi?id=2221791	issue-tracking, x_refsource_REDHAT

Impacted products

▼	Vendor	Product
	n/a	libssh
	Red Hat	Red Hat Enterprise Linux 7
	Red Hat	Red Hat Enterprise Linux 8
	Red Hat	Red Hat Enterprise Linux 9
	Fedora	Extra Packages for Enterprise Linux 7
	Fedora	Fedora

Show details on NVD website

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  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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