CVE-2024-2698

2024-06-1208:15:50

CWE-284

CWE-863

redhat

web.nvd.nist.gov

freeipa

vulnerability

misconfiguration

s4u2self

s4u2proxy

mit kerberos

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

47.0%

JSON

A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a condition for granting the “forwardable” flag on S4U2Self tickets. Fixing this mistake required adding a special case for the check_allowed_to_delegate() function: If the target service argument is NULL, then it means the KDC is probing for general constrained delegation rules and not checking a specific S4U2Proxy request.

In FreeIPA 4.11.0, the behavior of ipadb_match_acl() was modified to match the changes from upstream MIT Kerberos 1.20. However, a mistake resulting in this mechanism applies in cases where the target service argument is set AND where it is unset. This results in S4U2Proxy requests being accepted regardless of whether or not there is a matching service delegation rule.

Affected configurations

Nvd

Node

freeipafreeipaRange4.11.0–4.11.2

freeipafreeipaMatch4.12.0

AND

redhatenterprise_linuxMatch6.0

redhatenterprise_linuxMatch7.0

redhatenterprise_linuxMatch8.0

redhatenterprise_linuxMatch9.0

redhatenterprise_linux_eusMatch8.8

redhatenterprise_linux_eusMatch9.2

VendorProductVersionCPE
freeipafreeipa*cpe:2.3:a:freeipa:freeipa:*:*:*:*:*:*:*:*
freeipafreeipa4.12.0cpe:2.3:a:freeipa:freeipa:4.12.0:*:*:*:*:*:*:*
redhatenterprise_linux6.0cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
redhatenterprise_linux7.0cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
redhatenterprise_linux8.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
redhatenterprise_linux9.0cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
redhatenterprise_linux_eus8.8cpe:2.3:o:redhat:enterprise_linux_eus:8.8:*:*:*:*:*:*:*
redhatenterprise_linux_eus9.2cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
freeipa	freeipa	*	cpe:2.3:a:freeipa:freeipa::::::::
freeipa	freeipa	4.12.0	cpe:2.3:a:freeipa:freeipa:4.12.0:::::::*
redhat	enterprise_linux	6.0	cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*
redhat	enterprise_linux	7.0	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
redhat	enterprise_linux	8.0	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
redhat	enterprise_linux	9.0	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
redhat	enterprise_linux_eus	8.8	cpe:2.3:o:redhat:enterprise_linux_eus:8.8:::::::*
redhat	enterprise_linux_eus	9.2	cpe:2.3:o:redhat:enterprise_linux_eus:9.2:::::::*

CNA Affected

[
  {
    "versions": [
      {
        "status": "affected",
        "version": "4.11.0",
        "lessThan": "4.11.2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "4.12.0",
        "lessThan": "4.12.1",
        "versionType": "semver"
      }
    ],
    "packageName": "freeipa",
    "collectionURL": "https://github.com/freeipa/freeipa",
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "idm:DL1",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "8100020240528133707.823393f5",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:8::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "idm:DL1",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "8080020240530051744.b0a6ceea",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.8::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "ipa",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.11.0-15.el9_4",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9::crb",
      "cpe:/a:redhat:enterprise_linux:9::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "ipa",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.10.1-12.el9_2.2",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:9.2::crb",
      "cpe:/a:redhat:rhel_eus:9.2::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "ipa",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "ipa",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "idm:client/ipa",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  }
]