Vulnerability-Lookup

OESA-2024-1210 (CVE-2023-50387)

Vulnerability from osv_openeuler – Published: 2024-03-01 11:06 – Updated: 2026-08-06 11:06 – 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):

Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.(CVE-2023-50387)

The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.(CVE-2023-50868)

A vulnerability was found in Unbound due to incorrect default permissions, allowing any process outside the unbound group to modify the unbound runtime configuration. If a process can connect over localhost to port 8953, it can alter the configuration of unbound.service. This flaw allows an unprivileged attacker to manipulate a running instance, potentially altering forwarders, allowing them to track all queries forwarded by the local resolver, and, in some cases, disrupting resolving altogether.(CVE-2024-1488)

Severity

8.0 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-50387	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-50868	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2024-1488	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "unbound-1.11.0-11.oe1.aarch64.rpm",
          "unbound-devel-1.11.0-11.oe1.aarch64.rpm",
          "unbound-help-1.11.0-11.oe1.aarch64.rpm",
          "unbound-debuginfo-1.11.0-11.oe1.aarch64.rpm",
          "python3-unbound-1.11.0-11.oe1.aarch64.rpm",
          "unbound-libs-1.11.0-11.oe1.aarch64.rpm",
          "unbound-debugsource-1.11.0-11.oe1.aarch64.rpm"
        ],
        "src": [
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        ],
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        ]
      },
      "package": {
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        "name": "unbound",
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      },
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          "type": "ECOSYSTEM"
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      },
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        "ecosystem": "openEuler:22.03-LTS",
        "name": "unbound",
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      },
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          "unbound-help-1.13.2-10.oe2203sp1.x86_64.rpm",
          "unbound-libs-1.13.2-10.oe2203sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP1",
        "name": "unbound",
        "purl": "pkg:rpm/openEuler/unbound\u0026distro=openEuler-22.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.13.2-10.oe2203sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "unbound-help-1.13.2-10.oe2203sp2.aarch64.rpm",
          "unbound-libs-1.13.2-10.oe2203sp2.aarch64.rpm",
          "python3-unbound-1.13.2-10.oe2203sp2.aarch64.rpm",
          "unbound-1.13.2-10.oe2203sp2.aarch64.rpm",
          "unbound-devel-1.13.2-10.oe2203sp2.aarch64.rpm",
          "unbound-debugsource-1.13.2-10.oe2203sp2.aarch64.rpm",
          "unbound-debuginfo-1.13.2-10.oe2203sp2.aarch64.rpm"
        ],
        "src": [
          "unbound-1.13.2-10.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "unbound-debuginfo-1.13.2-10.oe2203sp2.x86_64.rpm",
          "unbound-1.13.2-10.oe2203sp2.x86_64.rpm",
          "unbound-debugsource-1.13.2-10.oe2203sp2.x86_64.rpm",
          "unbound-devel-1.13.2-10.oe2203sp2.x86_64.rpm",
          "unbound-help-1.13.2-10.oe2203sp2.x86_64.rpm",
          "unbound-libs-1.13.2-10.oe2203sp2.x86_64.rpm",
          "python3-unbound-1.13.2-10.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP2",
        "name": "unbound",
        "purl": "pkg:rpm/openEuler/unbound\u0026distro=openEuler-22.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.13.2-10.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "python3-unbound-1.13.2-10.oe2203sp3.aarch64.rpm",
          "unbound-debugsource-1.13.2-10.oe2203sp3.aarch64.rpm",
          "unbound-debuginfo-1.13.2-10.oe2203sp3.aarch64.rpm",
          "unbound-devel-1.13.2-10.oe2203sp3.aarch64.rpm",
          "unbound-1.13.2-10.oe2203sp3.aarch64.rpm",
          "unbound-help-1.13.2-10.oe2203sp3.aarch64.rpm",
          "unbound-libs-1.13.2-10.oe2203sp3.aarch64.rpm"
        ],
        "src": [
          "unbound-1.13.2-10.oe2203sp3.src.rpm"
        ],
        "x86_64": [
          "unbound-libs-1.13.2-10.oe2203sp3.x86_64.rpm",
          "unbound-debugsource-1.13.2-10.oe2203sp3.x86_64.rpm",
          "python3-unbound-1.13.2-10.oe2203sp3.x86_64.rpm",
          "unbound-help-1.13.2-10.oe2203sp3.x86_64.rpm",
          "unbound-1.13.2-10.oe2203sp3.x86_64.rpm",
          "unbound-debuginfo-1.13.2-10.oe2203sp3.x86_64.rpm",
          "unbound-devel-1.13.2-10.oe2203sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP3",
        "name": "unbound",
        "purl": "pkg:rpm/openEuler/unbound\u0026distro=openEuler-22.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.13.2-10.oe2203sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "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.\r\n\r\nSecurity Fix(es):\r\n\r\nCertain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the \u0026quot;KeyTrap\u0026quot; issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.(CVE-2023-50387)\r\n\r\nThe Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the \u0026quot;NSEC3\u0026quot; issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.(CVE-2023-50868)\r\n\r\nA vulnerability was found in Unbound due to incorrect default permissions, allowing any process outside the unbound group to modify the unbound runtime configuration. If a process can connect over localhost to port 8953, it can alter the configuration of unbound.service. This flaw allows an unprivileged attacker to manipulate a running instance, potentially altering forwarders, allowing them to track all queries forwarded by the local resolver, and, in some cases, disrupting resolving altogether.(CVE-2024-1488)",
  "id": "OESA-2024-1210",
  "modified": "2026-08-06T11:06:39Z",
  "published": "2024-03-01T11:06:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1210"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-50387"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-50868"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-1488"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "unbound security update",
  "upstream": [
    "CVE-2023-50387",
    "CVE-2023-50868",
    "CVE-2024-1488"
  ]
}

CVE-2023-50387 (GCVE-0-2023-50387)

Vulnerability from cvelistv5 – Published: 2024-02-14 00:00 – Updated: 2025-11-04 18:20

Summary

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-08 17:27 UTC

CWE

n/a
CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

mitre mitre root Scorecard

References

36 references

URL	Tags
https://www.athene-center.de/aktuelles/key-trap
https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.1…
https://kb.isc.org/docs/cve-2023-50387
https://docs.powerdns.com/recursor/security-advis…
https://www.theregister.com/2024/02/13/dnssec_vul…
https://news.ycombinator.com/item?id=39367411
https://www.securityweek.com/keytrap-dns-attack-c…
https://www.isc.org/blogs/2024-bind-security-release/
https://news.ycombinator.com/item?id=39372384
https://gitlab.nic.cz/knot/knot-resolver/-/releas…
https://lists.thekelleys.org.uk/pipermail/dnsmasq…
https://msrc.microsoft.com/update-guide/vulnerabi…
https://access.redhat.com/security/cve/CVE-2023-50387
https://bugzilla.suse.com/show_bug.cgi?id=1219823
https://www.athene-center.de/fileadmin/content/PD…
http://www.openwall.com/lists/oss-security/2024/02/16/2	mailing-list
http://www.openwall.com/lists/oss-security/2024/02/16/3	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2024…	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.netapp.com/advisory/ntap-2024030…
https://lists.debian.org/debian-lts-announce/2024…	mailing-list
https://lists.debian.org/debian-lts-announce/2024…
https://lists.debian.org/debian-lts-announce/2024…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…

Show details on NVD website

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      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T18:20:34.949Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.athene-center.de/aktuelles/key-trap"
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    "dateReserved": "2023-12-07T00:00:00.000Z",
    "dateUpdated": "2025-11-04T18:20:34.949Z",
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CVE-2023-50868 (GCVE-0-2023-50868)

Vulnerability from cvelistv5 – Published: 2024-02-14 00:00 – Updated: 2025-11-04 18:20

Summary

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-02-19 20:27 UTC

CWE

n/a
CWE-400 - Uncontrolled Resource Consumption

Assigner

mitre mitre root Scorecard

References

29 references

URL	Tags
https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.1…
https://docs.powerdns.com/recursor/security-advis…
https://www.isc.org/blogs/2024-bind-security-release/
https://datatracker.ietf.org/doc/html/rfc5155
https://kb.isc.org/docs/cve-2023-50868
https://gitlab.nic.cz/knot/knot-resolver/-/releas…
https://lists.thekelleys.org.uk/pipermail/dnsmasq…
https://access.redhat.com/security/cve/CVE-2023-50868
https://bugzilla.suse.com/show_bug.cgi?id=1219826
http://www.openwall.com/lists/oss-security/2024/02/16/2	mailing-list
http://www.openwall.com/lists/oss-security/2024/02/16/3	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2024…	mailing-list
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://security.netapp.com/advisory/ntap-2024030…
https://lists.debian.org/debian-lts-announce/2024…	mailing-list
https://lists.debian.org/debian-lts-announce/2024…
https://lists.debian.org/debian-lts-announce/2024…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…

Show details on NVD website

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CVE-2024-1488 (GCVE-0-2024-1488)

Vulnerability from cvelistv5 – Published: 2024-02-15 05:04 – Updated: 2026-08-06 22:24

Title

Unbound: unrestricted reconfiguration enabled to anyone that may lead to local privilege escalation

Summary

Severity

8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-02-15 18:02 UTC

CWE

CWE-276 - Incorrect Default Permissions

Assigner

redhat redhat root Scorecard

References

11 references

URL	Tags
https://access.redhat.com/errata/RHSA-2024:1750	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1751	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1780	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1801	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1802	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1804	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2587	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:2696	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:0837	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2024-1488	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2264183	issue-trackingx_refsource_REDHAT

Impacted products

17 products

Vendor	Product	Version
		Affected: 1.16.2
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:1.16.2-5.el8_9.6 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:1.16.2-5.8.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support	Unaffected: 0:1.7.3-12.el8_2.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.2::appstream cpe:/a:redhat:rhel_e4s:8.2::appstream cpe:/a:redhat:rhel_tus:8.2::appstream
Red Hat	Red Hat Enterprise Linux 8.2 Telecommunications Update Service	Unaffected: 0:1.7.3-12.el8_2.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.2::appstream cpe:/a:redhat:rhel_e4s:8.2::appstream cpe:/a:redhat:rhel_tus:8.2::appstream
Red Hat	Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions	Unaffected: 0:1.7.3-12.el8_2.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.2::appstream cpe:/a:redhat:rhel_e4s:8.2::appstream cpe:/a:redhat:rhel_tus:8.2::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 0:1.7.3-15.el8_4.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.4::appstream cpe:/a:redhat:rhel_e4s:8.4::appstream cpe:/a:redhat:rhel_tus:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Telecommunications Update Service	Unaffected: 0:1.7.3-15.el8_4.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.4::appstream cpe:/a:redhat:rhel_e4s:8.4::appstream cpe:/a:redhat:rhel_tus:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions	Unaffected: 0:1.7.3-15.el8_4.1 , < * (rpm) cpe:/a:redhat:rhel_aus:8.4::appstream cpe:/a:redhat:rhel_e4s:8.4::appstream cpe:/a:redhat:rhel_tus:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support	Unaffected: 0:1.7.3-17.el8_6.4 , < * (rpm) cpe:/a:redhat:rhel_eus:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support	Unaffected: 0:1.16.2-5.el8_8.4 , < * (rpm) cpe:/a:redhat:rhel_eus:8.8::appstream
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:1.16.2-3.el9_3.5 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support	Unaffected: 0:1.13.1-13.el9_0.4 , < * (rpm) cpe:/a:redhat:rhel_eus:9.0::appstream
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	Unaffected: 0:1.16.2-3.el9_2.4 , < * (rpm) cpe:/a:redhat:rhel_eus:9.2::appstream cpe:/a:redhat:rhel_eus:9.2::crb
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
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

Date Public

2024-02-13 00:00

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-2024-1210 (CVE-2023-50387)

CVE-2023-50387 (GCVE-0-2023-50387)

CVE-2023-50868 (GCVE-0-2023-50868)

CVE-2024-1488 (GCVE-0-2024-1488)

Tags

Sightings

Nomenclature

Related by attack behaviour