CVE-2020-21047

The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.debian.org/debian-lts-announce/2023/09/msg00026.html
https://sourceware.org/bugzilla/show_bug.cgi?id=25068	Issue Tracking
https://sourceware.org/git/?p=elfutils.git%3Ba=commitdiff%3Bh=99dc63b10b3878616b85df2dfd2e4e7103e414b8

Configurations

Configuration 1 (hide)

cpe:2.3:a:elfutils_project:elfutils:0.177:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-08-22 19:16

Updated : 2023-11-07 03:19

NVD link : CVE-2020-21047

Mitre link : CVE-2020-21047

CVE.ORG link : CVE-2020-21047

JSON object : View

Products Affected

elfutils_project

elfutils

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2020-21047", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2023-08-22T19:16:09.657", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00026.html", "source": "cve@mitre.org"}, {"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=25068", "tags": ["Issue Tracking"], "source": "cve@mitre.org"}, {"url": "https://sourceware.org/git/?p=elfutils.git%3Ba=commitdiff%3Bh=99dc63b10b3878616b85df2dfd2e4e7103e414b8", "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks."}, {"lang": "es", "value": "El componente libcpu que es utilizado por libasm de elfutils versi\u00f3n 0.177 (git 47780c9e), sufre de una vulnerabilidad de denegaci\u00f3n de servicio causada por ca\u00eddas de la aplicaci\u00f3n debido a una escritura fuera de l\u00edmites (CWE-787), por el error off-by-one (CWE-193) y por una aserci\u00f3n alcanzable (CWE-617). Para explotar la vulnerabilidad, los atacantes necesitan crear ciertos archivos ELF que eludan las comprobaciones de l\u00edmites faltantes. "}], "lastModified": "2023-11-07T03:19:43.020", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:elfutils_project:elfutils:0.177:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "79E8381A-EABD-4085-B282-14AB4B5A0B0E"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}