Vulnerability-Lookup

OESA-2024-2025 (CVE-2024-43167)

Vulnerability from osv_openeuler – Published: 2024-08-23 11:07 – Updated: 2026-08-06 11:07 – Source website

Summary

unbound security update

Details

Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. To help increase online privacy, Unbound supports DNS-over-TLS which allows clients to encrypt their communication. Unbound is available for most platforms such as FreeBSD, OpenBSD, NetBSD, MacOS, Linux and Microsoft Windows. Unbound is a totally free, open source software under the BSD license. It doesn't make custom builds or provide specific features to paying customers only.

Security Fix(es):

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.(CVE-2024-43167)

A heap-buffer-overflow flaw was found in the cfg_mark_ports function within Unbound's config_file.c, which can lead to memory corruption. This issue could allow an attacker with local access to provide specially crafted input, potentially causing the application to crash or allowing arbitrary code execution. This could result in a denial of service or unauthorized actions on the system.(CVE-2024-43168)

Severity

4.8 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2024-43167	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2024-43168	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "python3-unbound-1.13.2-12.oe2203sp1.aarch64.rpm",
          "unbound-1.13.2-12.oe2203sp1.aarch64.rpm",
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          "unbound-devel-1.13.2-12.oe2203sp1.aarch64.rpm",
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        ],
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          "unbound-debugsource-1.13.2-12.oe2203sp1.x86_64.rpm",
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        ]
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      "package": {
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        "purl": "pkg:rpm/openEuler/unbound\u0026distro=openEuler-22.03-LTS-SP1"
      },
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      "ecosystem_specific": {
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          "unbound-1.17.1-7.oe2403.aarch64.rpm",
          "unbound-anchor-1.17.1-7.oe2403.aarch64.rpm",
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          "unbound-devel-1.17.1-7.oe2403.aarch64.rpm",
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          "unbound-utils-1.17.1-7.oe2403.aarch64.rpm"
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          "unbound-1.17.1-7.oe2403.x86_64.rpm",
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          "unbound-debuginfo-1.17.1-7.oe2403.x86_64.rpm",
          "unbound-debugsource-1.17.1-7.oe2403.x86_64.rpm",
          "unbound-devel-1.17.1-7.oe2403.x86_64.rpm",
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          "unbound-libs-1.17.1-7.oe2403.x86_64.rpm",
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        ]
      },
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        "ecosystem": "openEuler:24.03-LTS",
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      },
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          "events": [
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            {
              "fixed": "1.17.1-7.oe2403"
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          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python3-unbound-1.13.2-13.oe2203sp4.aarch64.rpm",
          "unbound-1.13.2-13.oe2203sp4.aarch64.rpm",
          "unbound-anchor-1.13.2-13.oe2203sp4.aarch64.rpm",
          "unbound-debuginfo-1.13.2-13.oe2203sp4.aarch64.rpm",
          "unbound-debugsource-1.13.2-13.oe2203sp4.aarch64.rpm",
          "unbound-devel-1.13.2-13.oe2203sp4.aarch64.rpm",
          "unbound-help-1.13.2-13.oe2203sp4.aarch64.rpm",
          "unbound-libs-1.13.2-13.oe2203sp4.aarch64.rpm"
        ],
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          "unbound-1.13.2-13.oe2203sp4.src.rpm"
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          "python3-unbound-1.13.2-13.oe2203sp4.x86_64.rpm",
          "unbound-1.13.2-13.oe2203sp4.x86_64.rpm",
          "unbound-anchor-1.13.2-13.oe2203sp4.x86_64.rpm",
          "unbound-debuginfo-1.13.2-13.oe2203sp4.x86_64.rpm",
          "unbound-debugsource-1.13.2-13.oe2203sp4.x86_64.rpm",
          "unbound-devel-1.13.2-13.oe2203sp4.x86_64.rpm",
          "unbound-help-1.13.2-13.oe2203sp4.x86_64.rpm",
          "unbound-libs-1.13.2-13.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
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      ]
    },
    {
      "ecosystem_specific": {
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          "unbound-1.13.2-13.oe2203sp3.aarch64.rpm",
          "unbound-anchor-1.13.2-13.oe2203sp3.aarch64.rpm",
          "unbound-debuginfo-1.13.2-13.oe2203sp3.aarch64.rpm",
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          "unbound-libs-1.13.2-13.oe2203sp3.aarch64.rpm"
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          "unbound-devel-1.13.2-13.oe2203sp3.x86_64.rpm",
          "unbound-help-1.13.2-13.oe2203sp3.x86_64.rpm",
          "unbound-libs-1.13.2-13.oe2203sp3.x86_64.rpm"
        ]
      },
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        "name": "unbound",
        "purl": "pkg:rpm/openEuler/unbound\u0026distro=openEuler-22.03-LTS-SP3"
      },
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
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          "python3-unbound-1.11.0-13.oe2003sp4.aarch64.rpm",
          "unbound-1.11.0-13.oe2003sp4.aarch64.rpm",
          "unbound-debuginfo-1.11.0-13.oe2003sp4.aarch64.rpm",
          "unbound-debugsource-1.11.0-13.oe2003sp4.aarch64.rpm",
          "unbound-devel-1.11.0-13.oe2003sp4.aarch64.rpm",
          "unbound-help-1.11.0-13.oe2003sp4.aarch64.rpm",
          "unbound-libs-1.11.0-13.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "unbound-1.11.0-13.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "python3-unbound-1.11.0-13.oe2003sp4.x86_64.rpm",
          "unbound-1.11.0-13.oe2003sp4.x86_64.rpm",
          "unbound-debuginfo-1.11.0-13.oe2003sp4.x86_64.rpm",
          "unbound-debugsource-1.11.0-13.oe2003sp4.x86_64.rpm",
          "unbound-devel-1.11.0-13.oe2003sp4.x86_64.rpm",
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          "unbound-libs-1.11.0-13.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
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        "name": "unbound",
        "purl": "pkg:rpm/openEuler/unbound\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. To help increase online privacy, Unbound supports DNS-over-TLS which allows clients to encrypt their communication. Unbound is available for most platforms such as FreeBSD, OpenBSD, NetBSD, MacOS, Linux and Microsoft Windows. Unbound is a totally free, open source software under the BSD license. It doesn\u0026apos;t make custom builds or provide specific features to paying customers only.\n\nSecurity Fix(es):\n\nA 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.(CVE-2024-43167)\n\nA heap-buffer-overflow flaw was found in the cfg_mark_ports function within Unbound\u0026apos;s config_file.c, which can lead to memory corruption. This issue could allow an attacker with local access to provide specially crafted input, potentially causing the application to crash or allowing arbitrary code execution. This could result in a denial of service or unauthorized actions on the system.(CVE-2024-43168)",
  "id": "OESA-2024-2025",
  "modified": "2026-08-06T11:07:29Z",
  "published": "2024-08-23T11:07:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2025"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43167"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43168"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "unbound security update",
  "upstream": [
    "CVE-2024-43167",
    "CVE-2024-43168"
  ]
}

CVE-2024-43167 (GCVE-0-2024-43167)

Vulnerability from cvelistv5 – Published: 2024-08-08 20:24 – Updated: 2025-11-03 22:04

Title

Unbound: null pointer dereference in unbound

Summary

DISPUTE NOTE: this issue does not pose a security risk as it (according to analysis by the original software developer, NLnet Labs) falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet Labs has no further information about the claim, and suggests that affected Red Hat customers refer to available Red Hat documentation or support channels. ORIGINAL DESCRIPTION: 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.

Severity

2.8 (Low)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-09 12:53 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

redhat redhat root Scorecard

References

6 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2024-43167	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2303456	issue-trackingx_refsource_REDHAT
https://github.com/NLnetLabs/unbound/issues/1072
https://github.com/NLnetLabs/unbound/pull/1073/files
http://www.openwall.com/lists/oss-security/2024/08/16/6
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

8 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Red Hat	Red Hat OpenStack Platform 16.2	cpe:/a:redhat:openstack:16.2
Red Hat	Red Hat OpenStack Platform 17.1	cpe:/a:redhat:openstack:17.1
Red Hat	Red Hat OpenStack Platform 18.0	cpe:/a:redhat:openstack:18.0

Date Public

2024-08-07 02:00

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2024-43167",
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CVE-2024-43168 (GCVE-0-2024-43168)

Vulnerability from cvelistv5 – Published: 2024-08-08 20:25 – Updated: 2025-11-03 22:04

Title

Unbound: heap-buffer-overflow in unbound

Summary

DISPUTE NOTE: this issue does not pose a security risk as it (according to analysis by the original software developer, NLnet Labs) falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet Labs has no further information about the claim, and suggests that affected Red Hat customers refer to available Red Hat documentation or support channels. ORIGINAL DESCRIPTION: A heap-buffer-overflow flaw was found in the cfg_mark_ports function within Unbound's config_file.c, which can lead to memory corruption. This issue could allow an attacker with local access to provide specially crafted input, potentially causing the application to crash or allowing arbitrary code execution. This could result in a denial of service or unauthorized actions on the system.

Severity

4.8 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-09 19:19 UTC

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

redhat redhat root Scorecard

References

5 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2024-43168	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2303462	issue-trackingx_refsource_REDHAT
https://github.com/NLnetLabs/unbound/issues/1039
https://github.com/NLnetLabs/unbound/pull/1040/files
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

8 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Red Hat	Red Hat OpenStack Platform 16.2	cpe:/a:redhat:openstack:16.2
Red Hat	Red Hat OpenStack Platform 17.1	cpe:/a:redhat:openstack:17.1
Red Hat	Red Hat OpenStack Platform 18.0	cpe:/a:redhat:openstack:18.0

Date Public

2024-08-07 02:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2024-2025 (CVE-2024-43167)

CVE-2024-43167 (GCVE-0-2024-43167)

CVE-2024-43168 (GCVE-0-2024-43168)

Tags

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Nomenclature

Related by attack behaviour