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CVE-2020-21686

Date: August 22, 2023

A stack-use-after-scope issue discovered in expand_mmac_params function in preproc.c in nasm before 2.15.04 allows remote attackers to cause a denial of service via crafted asm file.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2020-21686
https://access.redhat.com/security/cve/CVE-2020-21686
https://bugzilla.nasm.us/show_bug.cgi?id=3392643
https://security-tracker.debian.org/tracker/CVE-2020-21686
https://www.mend.io/vulnerability-database/CVE-2020-21686

Severity Score

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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