CVE-2024-43167

2024-08-1213:38:35

CWE-476

redhat

web.nvd.nist.gov

cve-2024-43167

unbound

null pointer

dereference

segmentation fault

denial of service

api calls

crash

CVSS3

2.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

AI Score

3.7

Confidence

High

EPSS

Percentile

16.3%

JSON

A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly.

CNA Affected

[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "unbound",
    "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": "unbound",
    "defaultStatus": "unknown",
    "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": "unbound",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "unbound",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "rhcos",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:openshift:4"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenStack Platform 16.2",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "openstack-unbound-container",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:openstack:16.2"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenStack Platform 17.1",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "openstack-unbound-container",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:openstack:17.1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenStack Platform 18.0",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "openstack-unbound-container",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:openstack:18.0"
    ]
  }
]