csaf_redhat - rhsa-2021

rhsa-2021_1476

Vulnerability from csaf_redhat

Published

2021-05-03 06:18

Modified

2024-11-05 23:31

Summary

Red Hat Security Advisory: bind security update

Notes

Topic

An update for bind is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly. Security Fix(es): * bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself (CVE-2021-25215) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

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        "text": "The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.\n\nSecurity Fix(es):\n\n* bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself (CVE-2021-25215)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
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      "ids": [
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          "category": "description",
          "text": "A flaw was found in bind. The way DNAME records are processed may trigger the same RRset to the ANSWER section to be added more than once which causes an assertion check to fail. The highest threat from this flaw is to system availability.",
          "title": "Vulnerability description"
        },
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          "category": "summary",
          "text": "bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-25215"
        },
        {
          "category": "external",
          "summary": "RHBZ#1953857",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1953857"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-25215",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-25215"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-25215",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25215"
        },
        {
          "category": "external",
          "summary": "https://kb.isc.org/docs/cve-2021-25215",
          "url": "https://kb.isc.org/docs/cve-2021-25215"
        }
      ],
      "release_date": "2021-04-28T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-05-03T06:18:13+00:00",
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        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
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            "7Server-optional-7.2.AUS:bind-pkcs11-devel-32:9.9.4-29.el7_2.11.i686",
            "7Server-optional-7.2.AUS:bind-pkcs11-devel-32:9.9.4-29.el7_2.11.x86_64",
            "7Server-optional-7.2.AUS:bind-pkcs11-libs-32:9.9.4-29.el7_2.11.i686",
            "7Server-optional-7.2.AUS:bind-pkcs11-libs-32:9.9.4-29.el7_2.11.x86_64",
            "7Server-optional-7.2.AUS:bind-pkcs11-utils-32:9.9.4-29.el7_2.11.x86_64",
            "7Server-optional-7.2.AUS:bind-sdb-32:9.9.4-29.el7_2.11.x86_64",
            "7Server-optional-7.2.AUS:bind-sdb-chroot-32:9.9.4-29.el7_2.11.x86_64",
            "7Server-optional-7.2.AUS:bind-utils-32:9.9.4-29.el7_2.11.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself"
    }
  ]
}

cve-2021-25215

Vulnerability from cvelistv5

Published

2021-04-29 00:55

Modified

2024-09-16 22:02

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself

References

▼	URL	Tags
	https://kb.isc.org/v1/docs/cve-2021-25215	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2021/04/29/1	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/04/29/2	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/04/29/3	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2021/04/29/4	mailing-list, x_refsource_MLIST
	https://www.debian.org/security/2021/dsa-4909	vendor-advisory, x_refsource_DEBIAN
	https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html	mailing-list, x_refsource_MLIST
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3EUTBMK7L/	vendor-advisory, x_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQOFI7VSWBE/	vendor-advisory, x_refsource_FEDORA
	https://www.oracle.com/security-alerts/cpuoct2021.html	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210521-0006/	x_refsource_CONFIRM
	https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	x_refsource_CONFIRM

Impacted products

▼	Vendor	Product
	ISC	BIND9

Show details on NVD website

JSON

To clipboard

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  },
  "cveMetadata": {
    "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
    "assignerShortName": "isc",
    "cveId": "CVE-2021-25215",
    "datePublished": "2021-04-29T00:55:16.726513Z",
    "dateReserved": "2021-01-15T00:00:00",
    "dateUpdated": "2024-09-16T22:02:24.791Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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