github - ghsa-9q38-5hh6-p5gw

ghsa-9q38-5hh6-p5gw

Vulnerability from github

Published

2022-05-24 16:54

Modified

2024-04-04 01:48

Severity ?

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

Details

Reuven Plevinsky and Tal Vainshtein of Check Point Software Technologies Ltd. discovered that OpenBSD kernel (all versions, including 6.5) can be forced to create long chains of TCP SACK holes that cause very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-8460"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1049"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-08-26T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "Reuven Plevinsky and Tal Vainshtein of Check Point Software Technologies Ltd. discovered that OpenBSD kernel (all versions, including 6.5) can be forced to create long chains of TCP SACK holes that cause very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.",
  "id": "GHSA-9q38-5hh6-p5gw",
  "modified": "2024-04-04T01:48:13Z",
  "published": "2022-05-24T16:54:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-8460"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f"
    },
    {
      "type": "WEB",
      "url": "https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig"
    },
    {
      "type": "WEB",
      "url": "https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190905-0001"
    },
    {
      "type": "WEB",
      "url": "https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2019-8460

Vulnerability from cvelistv5

Published

2019-08-26 19:18

Modified

2024-08-04 21:17

Severity ?

Summary

OpenBSD kernel version <= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.

References

▼	URL	Tags
	https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f	x_refsource_MISC
	https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20190905-0001/	x_refsource_CONFIRM
	https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/	x_refsource_MISC
	https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03	x_refsource_MISC

Impacted products

▼	Vendor	Product
	n/a	OpenBSD

Show details on NVD website

To clipboard

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}

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