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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
mitreCNA
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CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 54%
VendorProductVersion
nasmnetwide_assembler
𝑥
< 2.15.04
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
nasm
bullseye
2.15.05-1
fixed
buster
ignored
bookworm
2.16.01-1
fixed
sid
2.16.03-1
fixed
trixie
2.16.03-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
nasm
noble
needs-triage
mantic
ignored
lunar
ignored
jammy
needs-triage
focal
needs-triage
bionic
needs-triage
xenial
needs-triage
trusty
ignored
Common Weakness Enumeration
References
https://bugzilla.nasm.us/show_bug.cgi?id=3392643
https://bugzilla.nasm.us/show_bug.cgi?id=3392643