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[email protected]CVE-2023-6534

HistoryDec 13, 2023 - 9:15 a.m.

CVE-2023-6534

2023-12-1309:15:34

[email protected]

web.nvd.nist.gov

freebsd

pf(4)

tcp

sequence number validation

vulnerability

nvd

cve-2023-6534

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.6 High

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.1%

JSON

In versions of FreeBSD 14.0-RELEASE before 14-RELEASE-p2, FreeBSD 13.2-RELEASE before 13.2-RELEASE-p7 and FreeBSD 12.4-RELEASE before 12.4-RELEASE-p9, the pf(4) packet filter incorrectly validates TCP sequence numbers. This could allow a malicious actor to execute a denial-of-service attack against hosts behind the firewall.

Affected configurations

NVD

Node

freebsdfreebsdMatch12.4-

freebsdfreebsdMatch12.4p1

freebsdfreebsdMatch12.4p2

freebsdfreebsdMatch12.4p3

freebsdfreebsdMatch12.4p4

freebsdfreebsdMatch12.4p5

freebsdfreebsdMatch12.4p6

freebsdfreebsdMatch12.4p7

freebsdfreebsdMatch12.4p8

freebsdfreebsdMatch12.4rc2-p1

freebsdfreebsdMatch12.4rc2-p2

freebsdfreebsdMatch13.2-

freebsdfreebsdMatch13.2p1

freebsdfreebsdMatch13.2p2

freebsdfreebsdMatch13.2p3

freebsdfreebsdMatch13.2p4

freebsdfreebsdMatch13.2p5

freebsdfreebsdMatch13.2p6

freebsdfreebsdMatch14.0-

freebsdfreebsdMatch14.0beta5

freebsdfreebsdMatch14.0p1

freebsdfreebsdMatch14.0rc3

freebsdfreebsdMatch14.0rc4-p1

CPENameOperatorVersion
freebsd:freebsdfreebsdeq12.4
freebsd:freebsdfreebsdeq13.2
freebsd:freebsdfreebsdeq14.0

CPE	Name	Operator	Version
freebsd:freebsd	freebsd	eq	12.4
freebsd:freebsd	freebsd	eq	13.2
freebsd:freebsd	freebsd	eq	14.0

CNA Affected

[
  {
    "defaultStatus": "unknown",
    "modules": [
      "pf"
    ],
    "product": "FreeBSD",
    "vendor": "FreeBSD",
    "versions": [
      {
        "lessThan": "p2",
        "status": "affected",
        "version": "14.0-RELEASE",
        "versionType": "release"
      },
      {
        "lessThan": "p7",
        "status": "affected",
        "version": "13.2-RELEASE",
        "versionType": "release"
      },
      {
        "lessThan": "p9",
        "status": "affected",
        "version": "12.4-RELEASE",
        "versionType": "release"
      }
    ]
  }
]