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MEDIUM · 5.5

CVE-2020-21686

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.

Vulnerability Description

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.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
NasmNetwide Assembler< 2.15.04

Related Weaknesses (CWE)

CWE-562

References

FAQ

What is CVE-2020-21686?

CVE-2020-21686 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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.

How severe is CVE-2020-21686?

CVE-2020-21686 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-21686?

Check the references section above for vendor advisories and patch information. Affected products include: Nasm Netwide Assembler.