CVE-2020-21685 — Out-of-bounds Write in Nasm

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.4%
top 36.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
NasmDebian NasmNasm Netwide Assembler
Timeline
PublishedAug 22

Description

Buffer Overflow vulnerability in hash_findi function in hashtbl.c in nasm 2.15rc0 allows remote attackers to cause a denial of service via crafted asm file.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/nasm< nasm 2.15.04-1 (bookworm)
▶Debiannasm/nasm< 2.15.04-1+3

🔴Vulnerability Details

2
OSV
CVE-2020-21685: Buffer Overflow vulnerability in hash_findi function in hashtbl↗2023-08-22
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GHSA
GHSA-rcf5-prwr-ph76: Buffer Overflow vulnerability in hash_findi function in hashtbl↗2023-08-22
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📋Vendor Advisories

2
Red Hat
nasm: Heap buffer overflow in hash_findi() in hashtbl.c↗2020-01-06
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Debian
CVE-2020-21685: nasm - Buffer Overflow vulnerability in hash_findi function in hashtbl.c in nasm 2.15rc...↗2020
▶