CVE-2021-20284 - Vulnerability Details - OpenCVE

A flaw was found in GNU Binutils 2.35.1, where there is a heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c due to the number of symbols not calculated correctly. The highest threat from this vulnerability is to system availability.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Gnu	Binutils
Netapp	Cloud Backup Ontap Select Deploy Administration Utility
Redhat	Enterprise Linux

Configuration 1 [-]

cpe:2.3:a:gnu:binutils:2.35.1:*:*:*:*:*:*:*

Configuration 2 [-]

OR	cpe:2.3:a:netapp:cloud_backup:-:::::::*
	cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:::::::*

Package	CPE	Advisory	Released Date
Red Hat Enterprise Linux 8
binutils-0:2.30-108.el8	cpe:/a:redhat:enterprise_linux:8	RHSA-2021:4364	2021-11-09T00:00:00Z
binutils-0:2.30-108.el8	cpe:/o:redhat:enterprise_linux:8	RHSA-2021:4364	2021-11-09T00:00:00Z

References

Link	Providers
https://bugzilla.redhat.com/show_bug.cgi?id=1937784
https://nvd.nist.gov/vuln/detail/CVE-2021-20284
https://security.gentoo.org/glsa/202208-30
https://security.netapp.com/advisory/ntap-20210521-0010/
https://sourceware.org/bugzilla/show_bug.cgi?id=26931
https://www.cve.org/CVERecord?id=CVE-2021-20284

History

Sun, 13 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.00079}`	epss `{'score': 0.00114}`

MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2021-03-26T16:39:03

Updated: 2024-08-03T17:37:23.579Z

Reserved: 2020-12-17T00:00:00

Link: CVE-2021-20284

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-03-26T17:15:13.063

Modified: 2024-11-21T05:46:16.897

Link: CVE-2021-20284

Redhat

Severity : Low

Publid Date: 2020-11-22T00:00:00Z

Links: CVE-2021-20284 - Bugzilla

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gnu:binutils:2.35.1:*:*:*:*:*:*:*", "matchCriteriaId": "CA2B34EB-DBF4-45BD-8C56-C4D8C8664420", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*", "matchCriteriaId": "5C2089EE-5D7F-47EC-8EA5-0F69790564C4", "vulnerable": true}, {"criteria": "cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*", "matchCriteriaId": "E7CF3019-975D-40BB-A8A4-894E62BD3797", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in GNU Binutils 2.35.1, where there is a heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c due to the number of symbols not calculated correctly. The highest threat from this vulnerability is to system availability."}, {"lang": "es", "value": "Se detect\u00f3 un fallo en GNU Binutils versi\u00f3n 2.35.1, donde se presenta un desbordamiento de b\u00fafer en la regi\u00f3n heap de la memoria en la funci\u00f3n _bfd_elf_slurp_secondary_reloc_section en el archivo elf.c debido a que el n\u00famero de s\u00edmbolos no se calcul\u00f3 correctamente. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema."}], "id": "CVE-2021-20284", "lastModified": "2024-11-21T05:46:16.897", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-26T17:15:13.063", "references": [{"source": "secalert@redhat.com", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1937784"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-30"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20210521-0010/"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=26931"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1937784"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202208-30"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20210521-0010/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=26931"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2021:4364", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "binutils-0:2.30-108.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}, {"advisory": "RHSA-2021:4364", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "binutils-0:2.30-108.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-11-09T00:00:00Z"}], "bugzilla": {"description": "binutils: Heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c", "id": "1937784", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1937784"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-119", "details": ["A flaw was found in GNU Binutils 2.35.1, where there is a heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c due to the number of symbols not calculated correctly. The highest threat from this vulnerability is to system availability.", "A flaw was found in GNU Binutils 2.35.1, where there is a heap-based buffer overflow in _bfd_elf_slurp_secondary_reloc_section in elf.c due to the number of symbols not calculated correctly. The highest threat from this vulnerability is to system availability."], "name": "CVE-2021-20284", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "binutils", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "binutils", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "gcc-toolset-10-binutils", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "gcc-toolset-9-binutils", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "binutils", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2020-11-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-20284\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-20284"], "threat_severity": "Low"}