Vulnerability-Lookup

RHSA-2019:3525

Vulnerability from csaf_opensuse - Published: 2019-11-05 00:00 - Updated: 2026-09-20 11:05

Summary

security update for dhcp

Severity

Moderate

Notes

Title of the patch: security update for dhcp

Description of the patch: This security update provides a functional equivalent of RHSA-2019:3525. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2019:3525.

Patchnames: RHSA-2019:3525

CVE-2019-6470

7.5 (High)


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

Affected products

Recommended 6 products

Product	Version	Remediation
Unresolved product id: SUSE Liberty Linux 8:dhcp-client-12:4.3.6-34.el8.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:dhcp-common-12:4.3.6-34.el8.noarch	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:dhcp-libs-12:4.3.6-34.el8.i686	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:dhcp-libs-12:4.3.6-34.el8.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:dhcp-relay-12:4.3.6-34.el8.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:dhcp-server-12:4.3.6-34.el8.x86_64	—	Vendor Fix

Threats

Impact important

References

5 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/r…	self
https://www.suse.com/security/cve/CVE-2019-6470/	self
https://www.suse.com/security/cve/CVE-2019-6470	external
https://bugzilla.suse.com/1134078	external

JSON

To clipboard

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CVE-2019-6470 (GCVE-0-2019-6470)

Vulnerability from cvelistv5 – Published: 2019-11-01 22:15 – Updated: 2024-09-17 01:25

Title

dhcpd: use-after-free error leads crash in IPv6 mode when using mismatched BIND libraries

Summary

There had existed in one of the ISC BIND libraries a bug in a function that was used by dhcpd when operating in DHCPv6 mode. There was also a bug in dhcpd relating to the use of this function per its documentation, but the bug in the library function prevented this from causing any harm. All releases of dhcpd from ISC contain copies of this, and other, BIND libraries in combinations that have been tested prior to release and are known to not present issues like this. Some third-party packagers of ISC software have modified the dhcpd source, BIND source, or version matchup in ways that create the crash potential. Based on reports available to ISC, the crash probability is large and no analysis has been done on how, or even if, the probability can be manipulated by an attacker. Affects: Builds of dhcpd versions prior to version 4.4.1 when using BIND versions 9.11.2 or later, or BIND versions with specific bug fixes backported to them. ISC does not have access to comprehensive version lists for all repackagings of dhcpd that are vulnerable. In particular, builds from other vendors may also be affected. Operators are advised to consult their vendor documentation.

Severity

6.5 (Medium)


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

CWE

A use-after-free error in DHCPv6 processing when interfacing with newer BIND libraries leads to frequent crashes

Assigner

isc mitre root Scorecard

References

5 references

URL	Tags
https://access.redhat.com/errata/RHSA-2019:2060	x_refsource_CONFIRM
https://lists.opensuse.org/opensuse-security-anno…	x_refsource_CONFIRM
https://lists.opensuse.org/opensuse-security-anno…	x_refsource_CONFIRM
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug…	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2019:3525	vendor-advisoryx_refsource_REDHAT

Impacted products

1 product

Vendor	Product	Version
Multiple, non-ISC	dhcpd	Affected: builds not wholly from ISC source < 4.4.1

Date Public

2019-05-11 00:00

Show details on NVD website

JSON

To clipboard

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          "ID": "CVE-2019-6470",
          "STATE": "PUBLIC",
          "TITLE": "dhcpd: use-after-free error leads crash in IPv6 mode when using mismatched BIND libraries"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "dhcpd",
                      "version": {
                        "version_data": [
                          {
                            "version_name": "builds not wholly from ISC source",
                            "version_value": "\u003c 4.4.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Multiple, non-ISC"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "There had existed in one of the ISC BIND libraries a bug in a function that was used by dhcpd when operating in DHCPv6 mode. There was also a bug in dhcpd relating to the use of this function per its documentation, but the bug in the library function prevented this from causing any harm. All releases of dhcpd from ISC contain copies of this, and other, BIND libraries in combinations that have been tested prior to release and are known to not present issues like this. Some third-party packagers of ISC software have modified the dhcpd source, BIND source, or version matchup in ways that create the crash potential. Based on reports available to ISC, the crash probability is large and no analysis has been done on how, or even if, the probability can be manipulated by an attacker. Affects: Builds of dhcpd versions prior to version 4.4.1 when using BIND versions 9.11.2 or later, or BIND versions with specific bug fixes backported to them. ISC does not have access to comprehensive version lists for all repackagings of dhcpd that are vulnerable. In particular, builds from other vendors may also be affected. Operators are advised to consult their vendor documentation."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.8"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "A use-after-free error in DHCPv6 processing when interfacing with newer BIND libraries leads to frequent crashes"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://access.redhat.com/errata/RHSA-2019:2060",
              "refsource": "CONFIRM",
              "url": "https://access.redhat.com/errata/RHSA-2019:2060"
            },
            {
              "name": "https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00049.html",
              "refsource": "CONFIRM",
              "url": "https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00049.html"
            },
            {
              "name": "https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00048.html",
              "refsource": "CONFIRM",
              "url": "https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00048.html"
            },
            {
              "name": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896122",
              "refsource": "CONFIRM",
              "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896122"
            },
            {
              "name": "RHSA-2019:3525",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2019:3525"
            }
          ]
        },
        "source": {
          "discovery": "USER"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2019-6470",
    "datePublished": "2019-11-01T22:15:33.599Z",
    "dateReserved": "2019-01-16T00:00:00.000Z",
    "dateUpdated": "2024-09-17T01:25:37.218Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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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

RHSA-2019:3525

CVE-2019-6470 (GCVE-0-2019-6470)

Tags

Sightings

Nomenclature

Related by attack behaviour