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

Version

▼

n/a

OpenBSD

Version: All, including latest - 6.5

Show details on NVD website

JSON

To clipboard

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    "dateReserved": "2019-02-18T00:00:00",
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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